Vasu Vihara, Buddhist monastery ruins in Bogra, Bangladesh.

Vasu Vihara is an archaeological site with five distinct mounds where two monasteries stood, built with living quarters arranged around central verandas. The location shows the spatial layout of both complexes and how they were organized.

Excavations in 1973–74 and the two following seasons uncovered two brick monasteries and a temple at the site. The Chinese pilgrim Xuanzang visited in 638 CE and recorded it as 'Po-shi-po' or Visvavihara, suggesting it served as a Buddhist centre of learning. Eighteen clay seals, mostly from the Pala dynasty, were also found.

The monastery complex shows how monks lived and learned there, with different spaces arranged around open courtyards. This layout allowed residents to gather daily and practice their faith together.

The site lies about 6 kilometers west of Mahasthangarh and can be easily located using precise coordinates. Visitors should expect uneven ground and wear comfortable shoes, as exploring the five mounds requires walking across the terrain.

Among the finds were 18 ancient clay seals, mostly from the Pala dynasty, which helped date the site's occupation. The mounds also yielded miniature statues, stone beads, ornamental bricks and clay lamps.