In 1941 Ratchadamnoen became the first Muay Thai stadium in Bangkok, although construction of the site was not completed until after the Second World War (the first match taking place in 1945). The rules and regulations used in the modern sport were established at this stadium. Like Lumpini, Ratchadamnoen stadium now sees a lot of western fighters involved in the sport and westerners consistently make up reasonable numbers in the audience.
Details: Ratchadamnoen Stadium is open Monday and Wednesday at 18:00, Thursday at 17:00 and 21:00, and Sunday at 16:00 and 20:00. Admission is 500 Baht to 1,500 Baht depending on the fight, the fighters, and whether you sit ringside.
How to get there: Ratchadamnoen Stadium is on Ratchadamnoen Nok Avenue only a few minutes walk from Khao San Road.
It is also possible to get to the stadium by boat; you need to stop at Banglumpoo Express Boat pier.