The Cao Dai Temple is among the most distinctive monuments of Vietnam. Built in 1955, it was erected by the Cao Dai troops that were established after the Japanese invasion of the country.
This temple is actually quite distinguished. All prophets and gods' messengers were honored inside this temple as they used to believe that all religions and sects were the same at the very end.
Many travel packages to Vietnam include visits to the Cao Dai Temple. In fact, many tourists are interested to visit the temple for its spiritual significance and its marvelous colorful architecture.
Vietnam link: https://www.righttravel.info/country/vietnam-23.html