The whole of Thailand is full of kickboxing stadiums but the biggest fights happen in Bangkok, normally at either the Lumpini or Ratchadamnoen stadiums. Muay Thai is the national sport of Thailand and it is talked about everywhere. The viewing figures on TV are some of the highest for any show that is aired. An evening spent at the stadium is sure to be action packed as the locals get so immersed in the fights that the atmosphere reaches fever pitch. There is usually somebody walking around taking bets as well if that is of interest to you.