Wat Chedi Hoi

Wat Chedi Hoi is a Buddhist temple in Bo Ngoen Subdistrict, Lat Lum Kaeo District, Pathum Thani Province, northwest of Bangkok. It is notable for its distinctive chedi constructed from millions of fossilized giant oyster shells estimated to be 5-8 million years old, discovered at the site. The temple complex also features a large reclining Buddha, a shell museum, ponds and gardens, combining religious, geological and local historical interest.

Visitors can expect a temple compound centered on the oyster-shell chedi (Chedi Hoi) covered in fossilized shells, a large outdoor reclining Buddha image, a small museum displaying giant fossil shells and artifacts, fish ponds where visitors can feed fish, landscaped gardens, Buddha images and shrines for merit-making, and local food and souvenir stalls within the grounds.

The temple is built on a site where large deposits of fossilized giant oyster shells were discovered, believed to be from an ancient sea covering the central plain millions of years ago. The shells were collected and used to construct the distinctive Chedi Hoi, giving the temple its name and preserving the geological heritage of the area.

Wat Chedi Hoi is an active Theravada Buddhist temple serving the local community for worship, merit-making and religious festivals. The shell chedi and Buddha images are venerated by visitors, and the temple is known locally as a cultural and educational site linking Buddhism with natural history.