Silla waged fierce war with its two neighboring kingdoms, Goguryeo and Baekje, before it finally unified the three kingdoms on the Korean Peninsula in 668. Unified Silla made an effort to build a peaceful land of Buddha. While the Bulguksa Temple embodied the idea of the land of Buddha in this world, the Seokguram Grotto describes the moment when Buddha found enlightenment. The relics from the 8th century are also of great value as most of them remain intact. In terms of construction plans, Seokguram Grotto marks the comprehensive embodiment of architecture, mathematics, geometry, religion and art. The Bulguksa Temple is an exemplary temple structure featuring Buddhist doctrines. The great architectural beauty is rare to find even in Asia, where Buddhism has developed since its inception.