India is known to have altogether 30 World Heritage Sites in UNESCO; the list of 30 sites are as follows-

• Chhatrapati Shivaji Terminus:
  

The Chhatrapati Shivaji Terminus, formerly known as Victoria Terminus Station, in Mumbai, is an outstanding example of Victorian Gothic Revival architecture in India, blended with themes deriving from Indian traditional architecture. The building, designed by the British architect F. W. Stevens, became the symbol of Bombay as the ‘Gothic City’ and the major international mercantile port of India. The terminal was built over 10 years, starting in 1878, according to a High Victorian Gothic design based on late medieval Italian models. Its remarkable stone dome, turrets, pointed arches and eccentric ground plan are close to traditional Indian palace architecture. It is an outstanding example of the meeting of two cultures, as British architects worked with Indian craftsmen to include Indian architectural tradition and idioms thus forging a new style unique to Bombay.

The Great Living Chola Temples were built by kings of the Chola Empire, which stretched over all of south India and the neighbouring islands. The site includes three great 11th- and 12th-century Temples: the Brihadisvara Temple at Thanjavur, the Brihadisvara Temple at Gangaikondacholisvaram and the Airavatesvara Temple at Darasuram. The Temple of Gangaikondacholisvaram, built by Rajendra I, was completed in 1035. Its 53-m vimana (sanctum tower) has recessed corners and a graceful upward curving movement, contrasting with the straight and severe tower at Thanjavur. The Airavatesvara temple complex, built by Rajaraja II, at Darasuram features a 24-m vimana and a stone image of Shiva. The temples testify to the brilliant achievements of the Chola in architecture, sculpture, painting and bronze casting.

• Kaziranga National Park:
  

In the heart of Assam, this park is one of the last areas in eastern India undisturbed by a human presence. It is inhabited by the world's largest population of one-horned rhinoceroses, as well as many mammals, including tigers, elephants, panthers and bears, and thousands of birds.

The site is on the southern bank of the Brahmaputra River at the foot of the Mikir Hills. The park lies in the flood plains of the Brahmaputra. The riverine habitat consists primarily of tall, dense grasslands interspersed with open forests, interconnecting streams and numerous small lakes (bheels ). Three-quarters or more of the area is submerged annually by the flood waters of the Brahmaputra. Soils are alluvial deposits of the Brahmaputra and its tributaries.

There are three main types of vegetation: alluvial inundated grasslands, tropical wet evergreen forests and tropical semi-evergreen forests. Grasslands predominate in the west, with tall 'elephant' grasses on the higher ground and short grasses.

The park contains about 15 species of India's threatened mammals. It harbors the world's largest population of Indian rhinoceros and Indian elephant.

• Group of Monuments at Hampi:
  

The austere, grandiose site of Hampi was the last capital of the last great Hindu Kingdom of Vijayanagar. Its fabulously rich princes built Dravidian temples and palaces which won the admiration of travellers between the 14th and 16th centuries. Conquered by the Deccan Muslim confederacy in 1565, the city was pillaged over a period of six months before being abandoned.The property encompasses an area of 4187, 24 hectares, located in the Tungabhadra basin in Central Karnataka, Bellary District.

• Group of Monuments at Pattadakal:

Pattadakal, in Karnataka, represents the high point of an eclectic art which, in the 7th and 8th centuries under the Chalukya dynasty, achieved a harmonious blend of architectural forms from northern and southern India. An impressive series of nine Hindu temples, as well as a Jain sanctuary, can be seen there. One masterpiece from the group stands out – the Temple of Virupaksha, built c. 740 by Queen Lokamahadevi to commemorate her husband's victory over the kings from the South.

• Group of Monuments at Mahabalipuram:
  

Mahabalipuram is pre-eminently testimony to the Pallavas civilization of south-east India.The sanctuary, known especially for its rathas (temples in the form of chariots), mandapas (cave sanctuaries), and giant open-air reliefs, is one of the major centres of the cult of Siva. The influence of the sculptures of Mahabalipuram, characterized by the softness and supple mass of their modelling, spread widely (Cambodia, Annam, Java).

Founded in the 7th century by the Pallavas sovereigns south of Madras, the harbour of Mahabalipuram traded with the distant kingdoms of South-East Asia: Kambuja (Cambodia) and Shrivijaya (Malaysia, Sumatra, Java) and with the empire of Champa (Annam). But the fame of its role as a harbour has been transferred to its rock sanctuaries and Brahmin temples which were constructed or decorated at Mahabalipuram between 630 and 728.

• Keoladeo National Park:
  

This former duck-hunting reserve of the Maharajas is one of the major wintering areas for large numbers of aquatic birds from Afghanistan, Turkmenistan, China and Siberia. Some 364 species of birds, including the rare Siberian crane, have been recorded in the park.

• Manas Wildlife Sanctuary:

Manas Wildlife Sanctuary is located in the State of Assam in North-East India, a biodiversity hotspot. Covering an area of 39,100 hectares, it spans the Manas river and is bounded to the north by the forests of Bhutan. The Manas Wildlife Sanctuary is part of the core zone of the 283,700 hectares Manas Tiger Reserve, and lies alongside the shifting river channels of the Manas River. The site’s scenic beauty includes a range of forested hills, alluvial grasslands and tropical evergreen forests. The site provides critical and viable habitats for rare and endangered species, including tiger, greater one-horned rhino, swamp deer, pygmy hog and Bengal florican. Manas has exceptional importance within the Indian sub-continent’s protected areas, as one of the most significant remaining natural areas in the region, where sizeable populations of a large number of threatened species continue to survive.

• Hill Forts of Rajasthan:
  

The serial site, situated in the state of Rajastahan, includes six majestic forts in Chittorgarh; Kumbhalgarh; Sawai Madhopur; Jhalawar; Jaipur, and Jaisalmer. The ecclectic architecture of the forts, some up to 20 kilometres in circumference, bears testimony to the power of the Rajput princely states that flourished in the region from the 8th to the 18th centuries. Enclosed within defensive walls are major urban centres, palaces, trading centres and other buildings including temples that often predate the fortifications within which developed an elaborate courtly culture that supported learning, music and the arts. Some of the urban centres enclosed in the fortifications have survived, as have many of the site's temples and other sacred buildings. The forts use the natural defenses offered by the landscape: hills, deserts, rivers, and dense forests. They also feature extensive water harvesting structures, largely still in use today.

• Nanda Devi and Valley of Flowers National Park:
  
  

Nestled high in West Himalaya, India’s Valley of Flowers National Park is renowned for its meadows of endemic alpine flowers and outstanding natural beauty. This richly diverse area is also home to rare and endangered animals, including the Asiatic black bear, snow leopard, brown bear and blue sheep. The gentle landscape of the Valley of Flowers National Park complements the rugged mountain wilderness of Nanda Devi National Park. Together they encompass a unique transition zone between the mountain ranges of the Zanskar and Great Himalaya, praised by mountaineers and botanists for over a century and in Hindu mythology for much longer.

• Sundarbans National Parks:

The Sundarbans contain the world's largest mangrove forests and one of the most biologically productive of all natural ecosystems. Located at the mouth of the Ganges and Brahmaputra Rivers between India and Bangladesh, its forest and waterways support a wide range of' fauna including a number of species threatened with extinction. The mangrove habitat supports the single largest population of tigers in the world which have adapted to an almost amphibious life, being capable of swimming for long distances and feeding on fish, crab and water monitor lizards. They are also renowned for being “man-eaters”, most probably due to their relatively high frequency of encounters with local people.

• Humayun's Tomb in Delhi:

Exemplifying the formative stage of the Mughal structural style, Humayun's Tomb stands as a landmark in the development of Mughal architecture, and also represents the earliest extant specimen of the Mughal scheme of the garden tomb, with causeways and channels. It is a well-developed specimen of the double-domed elevation with kiosks on a grand scale. This building tradition culminated in the Taj Mahal, constructed a century later. Despite being the first standardized example of this style, Humayun's Tomb is an architectural achievement of the highest order.

The tomb of Humayun, second Mughal Emperor of India, was built by his widow, Biga Begum (Hajji Begum), in 1569-70, 14 years after his death, at a cost of 1.5 million rupees. The architect was Mirak Mirza Ghiyath. It was later used for the burial of various members of the ruling family and contains some 150 graves. It has aptly been described as the necropolis of the Mughal dynasty.

• Khajuraho Group of Monuments:

The complex of Khajuraho represents a unique artistic creation, as much for its highly original architecture as for the sculpted decor of a surprising quality made up of a mythological repertory of numerous scenes of amusements of which not the least known are the scenes, susceptible to various interpretations, sacred or profane.

Khajuraho is one of the capitals of the Chandella rulers, a dynasty of Rajput origin which came into power at the beginning of the 10th century, and reached its apogee between 950 and 1050. Of the 85 temples which were constructed at Khajuraho during the Chandella period (and which were still resplendent: when the great traveller Ibn Battuta noted them in 1335), 22 still exist, disseminated within an area of about 6 km2.

As, monuments of two distinct religions, Brahminism and Jainism, the temples of Khajuraho are nonetheless distinguished by a common typology

• Western Ghats:
  

Older than the Himalaya mountains, the mountain chain of the Western Ghats represents geomorphic features of immense importance with unique biophysical and ecological processes. The site’s high montane forest ecosystems influence the Indian monsoon weather pattern. Moderating the tropical climate of the region, the site presents one of the best examples of the monsoon system on the planet. It also has an exceptionally high level of biological diversity and endemism and is recognized as one of the world’s eight ‘hottest hotspots’ of biological diversity. The forests of the site include some of the best representatives of non-equatorial tropical evergreen forests anywhere and are home to at least 325 globally threatened flora, fauna, bird, amphibian, reptile and fish species.

• Mountain Railways of India:

The development of railways in the 19th century had a profound influence on social and economic developments in many parts of the world. The two Mountain Railways of India on the World Heritage List are outstanding examples of the interchange of values on developments in technology, and the impact of innovative transportation system on the social and economic development of a multicultural region, which was to serve as a model for similar developments in many parts of the world.

 The Darjeeling Himalayan Railway was the first, and is still the most outstanding, example of a hill passenger railway. Opened in 1881, its design applies bold and ingenious engineering solutions to the problem of establishing an effective rail link across a mountainous terrain of great beauty.

 The construction of the Nilgiri Mountain Railway, a 46-km long metre-gauge single-track railway in Tamil Nadu State was first proposed in 1854, but due to the difficulty of the mountainous location the work only started in 1891 and was completed in 1908. This railway, scaling an elevation of 326 m to 2,203 m, represented the latest technology of the time. 

The Kalka Shimla Railway, a 96-km long, single track working rail link built in the mid-19th century to provide a service to the highland town of Shimla is emblematic of the technical and material efforts to disenclave mountain populations through the railway. All three railways are still fully operational.

• Qutub Minar:
  

Built in the early 13th century a few kilometres south of Delhi, the red sandstone tower of Qutb Minar is 72.5 m high, tapering from 2.75 m in diameter at its peak to 14.32 m at its base, and alternating angular and rounded flutings. The surrounding archaeological area contains funerary buildings, notably the magnificent Alai-Darwaza Gate, the masterpiece of Indo-Muslim art (built in 1311), and two mosques, including the Quwwatu'l-Islam, the oldest in northern India, built of materials reused from some 20 Brahman temples.

• Red Fort Complex:
  

The Red Fort Complex was built as the palace fort of Shahjahanabad – the new capital of the fifth Mughal Emperor of India, Shah Jahan. Named for its massive enclosing walls of red sandstone, it is adjacent to an older fort, the Salimgarh, built by Islam Shah Suri in 1546, with which it forms the Red Fort Complex. The private apartments consist of a row of pavilions connected by a continuous water channel, known as the Nahr-i-Behisht (Stream of Paradise). The Red Fort is considered to represent the zenith of Mughal creativity which, under the Shah Jahan, was brought to a new level of refinement. The planning of the palace is based on Islamic prototypes, but each pavilion reveals architectural elements typical of Mughal building, reflecting a fusion of Persian, Timurid and Hindu traditions The Red Fort’s innovative planning and architectural style, including the garden design, strongly influenced later buildings and gardens in Rajasthan, Delhi, Agra and further afield.

• Rock Shelters of Bhimbetka:

The Rock Shelters of Bhimbetka are in the foothills of the Vindhyan Mountains on the southern edge of the central Indian plateau. Within massive sandstone outcrops, above comparatively dense forest, are five clusters of natural rock shelters, displaying paintings that appear to date from the Mesolithic Period right through to the historical period. The cultural traditions of the inhabitants of the twenty-one villages adjacent to the site bear a strong resemblance to those represented in the rock paintings.

• Sun Temple in Konârak:
  

On the shores of the Bay of Bengal, bathed in the rays of the rising sun, the temple at Konarak is a monumental representation of the sun god Surya's chariot; its 24 wheels are decorated with symbolic designs and it is led by a team of six horses. Built in the 13th century, it is one of India's most famous Brahman sanctuaries.

• Taj Mahal:

The Taj Mahal is located on the right bank of the Yamuna River in a vast Mughal garden that encompasses nearly 17 hectares, in the Agra District in Uttar Pradesh. It was built by Mughal Emperor Shah Jahan in memory of his wife Mumtaz Mahal with construction starting in 1632 AD and completed in 1648 AD, with the mosque, the guest house and the main gateway on the south, the outer courtyard and its cloisters were added subsequently and completed in 1653 AD. The existence of several historical and Quaranic inscriptions in Arabic script have facilitated setting the chronology of Taj Mahal. For its construction, masons, stone-cutters, inlayers, carvers, painters, calligraphers, dome builders and other artisans were requisitioned from the whole of the empire and also from the Central Asia and Iran. Ustad-Ahmad Lahori was the main architect of the Taj Mahal.

• Jantar Mantar in Jaipur:
  

The Jantar Mantar, in Jaipur, is an astronomical observation site built in the early 18th century. It includes a set of some 20 main fixed instruments. They are monumental examples in masonry of known instruments but which in many cases have specific characteristics of their own. Designed for the observation of astronomical positions with the naked eye, they embody several architectural and instrumental innovations. This is the most significant, most comprehensive, and the best preserved of India's historic observatories. It is an expression of the astronomical skills and cosmological concepts of the court of a scholarly prince at the end of the Mughal period.

• Mahabodhi Temple and the Buddha tree: 
  

The Mahabodhi Temple Complex is one of the four holy sites related to the life of the Lord Buddha, and particularly to the attainment of Enlightenment. The first temple was built by Emperor Asoka in the 3rd century B.C., and the present temple dates from the 5th or 6th centuries. It is one of the earliest Buddhist temples built entirely in brick, still standing in India, from the late Gupta period.

The Temple Complex has direct associations with the life of the Lord Buddha (566-486 BC) as the place where in 531 BC he attained the supreme and perfect insight while seated under the Bodhi Tree. It provides exceptional records for the events associated with his life and for subsequent worship, particularly since Emperor Asoka made a pilgrimage to this spot around 260 BC and built the first temple at the site of the Bodhi Tree. The Mahabodhi Temple Complex is located in the very heart of the city of Bodh Gaya. The site consists of the main temple and six sacred places within an enclosed area, and a seventh one, the Lotus Pond, just outside the enclosure to the south.