The main building is phra ubosot, which houses the statue of the Emerald Buddha. The legendary history of this Buddha image is traced to India, five centuries after Gautama Buddha attained Nirvana, until it was finally enshrined in Bangkok at the Wat Phra Kaew temple in 1782 during the reign of Phra Phutthayotfa Chulaloke, King Rama I. This marked the beginning of theChakri Dynasty of Thailand