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Temples

Wat Chedi Hoi

4.4 · 2,702 reviews
A quiet and unconventional site for geological curiosity.
73, Wat Chedi Hoi, Bo Ngoen, Lat Bua Luang District, Phra Nakhon Si Ayutthaya 12140, Thailand
Interesting facts
1

The fossils displayed are identified as oysters that lived approximately 8 to 10 million years ago.

2

The temple was founded by Luang Por Thong Klueng, who discovered the fossil beds while digging a pond on the grounds.

3

The main pagoda is built using an estimated 800,000 to 1,000,000 fossilized shells.

4

The site acts as an educational center for regional paleontology, showcasing specimens unearthed directly from the temple's foundation.

5

The pond area surrounding the temple is a sanctuary for large fish species, where feeding is permitted as an act of merit.

Overview

Wat Chedi Hoi is a unique Buddhist temple site characterized by its extensive collection of millions of ancient fossilized oyster shells. The temple grounds feature a large, cone-shaped chedi constructed primarily from these calcified remains, which are estimated to be several million years old. Local geological evidence suggests the area was once part of an ancient seabed before the land rose and the water receded. The site houses a museum where visitors can examine various sizes and types of these fossilized shells. In addition to the fossils, the temple includes a landscaped park with a pond that is home to a significant population of large, protected fish. The temple serves as both a religious site and a geological showcase for the local Lat Bua Luang district. Architectural elements of the temple blend traditional Thai style with these unusual natural materials. It remains an active place of worship for the local community, emphasizing spiritual merit-making alongside geological tourism.

Photo spot

The base of the main shell-encrusted chedi, which provides the best perspective of the fossil density.

Insider tips

Visit the onsite museum to understand the geological context of the shells before exploring the main temple grounds.

Bring a small amount of cash if you wish to purchase fish food to feed the carp in the sanctuary pond.

Walk the perimeter of the pagoda to observe the different layers of fossils embedded in the masonry.

What to avoid

Do not attempt to remove or collect any fossil fragments from the structures, as they are considered sacred and protected property.

Etiquette

Maintain a respectful silence, remove shoes before entering any temple buildings, and ensure shoulders and knees are covered.

Plan your visit
Typical visit
1-1.5 hours
Best time to visit
Early morning or late afternoon to avoid the high midday heat common in the open, unshaded areas of the temple.
Address
73, Wat Chedi Hoi, Bo Ngoen, Lat Bua Luang District, Phra Nakhon Si Ayutthaya 12140, Thailand
14.115, 100.386
Get directions
Details
Key featureFossilized oyster shell architecture
MuseumOn-site gallery of prehistoric fossils

Frequently asked

Plan for about 1-1.5 hours to see the highlights.

The best time to visit is Early morning or late afternoon to avoid the high midday heat common in the open, unshaded areas of the temple..

The base of the main shell-encrusted chedi, which provides the best perspective of the fossil density.

Close by you'll find สวนลุงหมง, Wat Bot (Sam Khok), Wat Pho Prasit.