The Pavilion of Regalia, Royal Decorations and Coins is a museum showcasing regalia, royal Thai decorations of the early period, historical Thai money and ornaments used in the royal courts. It is under the supervision of the Bureau of Grand National Treasure, the Treasury Department which has the responsibility to safeguard, conserve, and display national treasures.
The museum is inside the Royal Grand Palace, at the entrance to the Emerald Buddha Temple.
Wikipedia https://en.wikipedia.org/wiki/Pavilion_of_Regalia,_Royal_Decorations_and_Coins
Address Thailand
Coordinates 13°45'3.628" N 100°29'30.245" E