Wat Saket, also known as Wat Phu Khao Thong, is located outside the ancient island of Rattanakosin in Bangkok. It is one of Bangkok's oldest temples. During the Ayutthaya period, which lasted until 2310, the temple was called Wat Sakae. Under King Rama I, it was renovated and renamed Wat Saket Ratchaworawihan.

The Wat Saket complex is famous for the 60-meter-high Phu Khao Thong (Golden Mountain), upon which stands the temple's gilded main pagoda. The mountain was built from the remains of a collapsed pagoda commissioned by King Rama III and was once the highest point in Bangkok. Phu Khao Thong is a well-known and revered landmark of Bangkok. Climbing to the summit requires ascending more than 300 steps.

Near the foot of the stairs lies an unusual cemetery overgrown with vines and trees. Here rest the remains of many who died of the plague at the end of the 18th century, at the foot of Phu Khao Thong. Because the temple served as the main cemetery during this dark period in Bangkok's history, the cemetery and its surroundings are called "Pratu Phi."