Built in the 15th Century, Wat Ratchaburana is one of the most well preserved ruins in the ancient Siam capital of Ayutthaya, Thailand. The temple was built by Chao Sam Phraya, who became king after his father passed away in 1424 and his two brothers, Chao Aye Phraya and Chao Yi Phraya killed each other when they fought over the throne. Chao Sam Phraya built Wat Ratchaburana to house the royal remains.