At 122 metres (400 ft), it was the world's tallest stupa, and the third tallest structure in the world when it was built by King Mahasena of Anuradhapura (273–301).

The Samadhi Buddha is a famous statue situated at Mahamevnāwa Park in Anuradhapura, Sri Lanka. The Buddha is depicted in the position of the Dhyana Mudra, the posture of meditation associated with his first Enlightenment. This statue is 7 feet 3 inches in height and carved from dolomite marble.

Abhayagiri Vihāra was a major monastery site of Mahayana, Theravada and Vajrayana Buddhism that was situated in Anuradhapura, Sri Lanka. It is one of the most extensive ruins in the world and one of the most sacred Buddhist pilgrimage cities in the nation.

Kuttam Pokuna (twin ponds or pools) are well preserved old bathing tanks or ponds in Sri Lanka. This pair of ponds was built by the Sinhalese in the ancient Anuradhapura Kingdom. They form part of the Abhayagiri vihāra complex and are an example of the works in the field of hydrological engineering, architecture and art of the ancient Sinhalese.

The Elephant Pond (Eth Pokuna) in Anuradhapura is a massive ancient reservoir built during the reign of the kings in Sri Lanka's historical Anuradhapura Kingdom. Measuring approximately 159 meters in length, 52 meters in width, and 9.5 meters in depth, it was used to supply water to the nearby monasteries. The pond's name likely comes from its enormous size, suggesting it could even accommodate elephants. A testament to ancient Sri Lankan engineering, the pond highlights the ingenuity and resourcefulness of the era's hydraulic systems

Sandakada Pahana, also known as Moonstone, is a unique feature of the architecture of ancient Sri Lanka. It is an elaborately carved semi-circular stone slab, usually placed at the bottom of staircases and entrances.

some of the most complex irrigation systems of the ancient world. The earliest examples of irrigation works in Sri Lanka date from about 430 BCE, during the reign of King Pandukabhaya, and were under continuous development for the next thousand years. In addition to constructing underground canals, the Sinhalese were the first to build completely artificial reservoirs to store water

The famous Chinese traveler monk Fa-Hien who visited the monastery in the 5th century stated that the monastery housed up to 5,000 monks at that time. All the meals of these monks would have been prepared and served at this location.

The Ruwanweliseya is sited in the Ancient Sinhala capital of Anuradhapura in the North Central Province of Sri Lanka. It was built by King Dutugamunu (137 BC – 119 BC) and completed by his younger brother, King Saddhatissa, after his death. The Ruwanweliseya is ranked among the tallest ancient monuments in the world.

The Jaya Sri Maha Bodhi is a sacred fig tree, or Ficus religiosa, that stands in the Mahamewna Gardens in Anuradhapura, Sri Lanka. Not only is it the closest authentic living link to Gautama Buddha, it is also the oldest human-planted tree in the world with a known planting date and a recorded history.