a replica of the Grand Palace at Ancient City.
Ancient Siam (also known as Ancient City,, Mueang Boran) is a museum park constructed by Lek Viriyaphant and occupying over 200 acres (0.81 km2) in the shape of Thailand.

Ancient Siam is dubbed as the world's largest outdoor museum: the 320-hectare "city" features 116 structures of Thailand's famous monuments and architectural attractions. The grounds of Ancient Siam correspond roughly to the shape of the kingdom, with the monuments lying at their correct places geographically. Some of the buildings are life-size replicas of existing or former sites, while others are scaled down.

The replicas were constructed with the assistance of experts from the National Museum to ensure historical accuracy.