King Gopala founded the Vikramashila Vihara, which was one of the most important centers of Buddhist learning in ancient India. It was located in present-day Bihar, India, and was established during the Pala dynasty.

Details about Vikramashila Vihara:

• Vikramashila was founded by King Dharmapala in the late 8th century, but it was under the reign of his successor, King Gopala, that the vihara became a major center of Buddhist learning.

• The Vikramashila Vihara was known for its high standards of scholarship and attracted students and scholars from all over India and neighboring countries, including Tibet, China, and Korea.

• The vihara had a large library, which housed thousands of manuscripts on various subjects, including Buddhist philosophy, logic, and language.

• Vikramashila Vihara was also known for its famous teachers, such as Atisha Dipankara, who was a renowned Buddhist scholar and teacher from Tibet.

• The decline of Vikramashila Vihara began in the 12th century, when it was sacked by Muslim invaders. The vihara was never fully restored, and it eventually fell into ruins.

Conclusion:

Thus, it can be concluded that King Gopala founded the Vikramashila Vihara, which played a crucial role in the development and spread of Buddhist philosophy and learning in ancient India. The vihara was known for its high standards of scholarship, famous teachers, and extensive library.