Brick-and-mortar casinos are outlawed in Thailand, so you won’t find any sanctioned gambling houses there. Thailand does have an underground casino scene that operates secretly, but the properties are regularly raided by authorities and are therefore unsafe to visit. Your best bet for land-based gaming near Thailand is to head to Laos or Poipet. Alternatively, you can gamble at an online casino in Thailand, from the safety of your own home.