Borobudur Temple, built in the ninth century under the Sailendra dynasty in Indonesia, is a significant world heritage site known for its intricate architecture influenced by Gupta designs. It consists of eight terraces symbolizing Buddhist cosmology, representing three spiritual spheres: kamadhatu, rupadhatu, and arupadhatu. The temple serves as a relic storage, a place of worship for Buddhists, and is crucial for understanding Indonesia's historical and cultural heritage.