Wat Yannawa, commonly known in English as "the boat temple", is a Buddhist temple (Wat) in Bangkok on Charoen Krung Road, Sathon district. The temple has a long history from the Ayutthaya era to the present. During the rule of King Rama III, a viharn was built in the shape of a Chinese junk, giving the temple the nickname "the boat temple". This construction inside the temple houses a space where people pray; a nearby ubosot enshrines Buddha images and illustrations of the Loi Prathip Royal Lantern Festival (พระราชพิธีลอยพระประทีป). Additional exterior buildings enshrine a Buddha relic from Sri Lanka and the Goddess of Mercy.