The Sanctuary of Truth Museum large carved wooden castle Thai tetrahedral style, more than 100 meters high, using hard wood that can support weight well, such as Takhianthong wood, Pradu wood, Daeng wood, Teng wood, and Golden teak wood in construction. It is a contemporary Thai architecture built in the reign of King Rama IX, designed to deviate from traditional Thai architecture. But sticking to the ancient methods of construction, such as using the joining of the wood by joining the dowel, hammering the bolt, wedge, hawk's tail without the use of nails at all The main idea is to present beliefs, faith, religion, philosophy, ethics, civilization and good culture of East Asian people. The main point is in the central hall. which is the location of Maha Busabok Wiman It is an exquisitely carved piece of wood. It symbolizes the emptiness of the universe or Nirvana.