The city is named after the cosmos trees that were cut down to form the capital. It is a famous Buddhist PIlgrimage Centre, attracting a large number of pilgrims every year and the city invites a lot to its spiritual site, as well as its archaeological riches. There are many landmarks related to Lord Buddha in Kaushambi. Ghoshit Ram Monastery has been found during the excavations. Ashoka pillar and several other monuments had been unearthed during excavations. One of the attractions here is the Kaleshwarmahadev temple dedicated to Lord Shiva, which attracts many devotees during the Shivratri festival. Another important site is the Jain temple Digambara, the center of Jain pilgrims. 

The ruins of Udayan Fort have been bequeathed to the city as a center of learning. However, the nation associated the city with the epic Mahabharata, as it was considered an important place in the new capital of the Pandava dynasty. The city is surrounded by a wall and a moat and has a large number of brick cliffs, showing a large number of houses in its area. Kaushambi is an important center of Buddhist culture and heritage.