Phra Nakhon Khiri - Mueang Phet Festival in Phetchaburi
Phetchaburi's signature annual fair combines the long-running Phra Nakhon Khiri Fair, centered on the hilltop Khao Wang palace built for King Mongkut (Rama IV), with a broader Mueang Phet cultural celebration of the province's heritage. Held each February, it features a light-and-sound show and a historical procession against the palace's illuminated buildings.
Phetchaburi, whose name translates as city of diamonds, was already an established town along Thailand's central coast when King Mongkut, Rama IV, chose a hill on its outskirts to build Phra Nakhon Khiri in the 1850s, a summer palace and astronomical observatory reflecting the king's well-documented interest in Western science alongside traditional Thai kingship.