Kesaria, also known as Kesariya is a town in the district of East Champaran, in the Indian state of Bihar.

Before the excavation of this, they believed that inside it there is a temple of Shiva which was built by King Bhema containing a lot of treasures.

Initially constructed as a mud stupa, it gained its present structure in the Maurya, Sunga and Kushana period.

The Chinese Buddhist pilgrim Xuanzang mentions having seen the grand Stupa in Kia-shi-po-lo[clarification needed] (Kesariya) but it was deserted and overgrown.

The Kesariya stupa was discovered in 1958 during an excavation led by Archaeologist KK Muhammed of Archaeological Survey of India (ASI).