The Three Pagoda Pass forms the border between Thailand and Burma. This pass is the link to Sangkhlaburi town of Thailand and Payathonsu town of Myanmar. It is approximately 1,000 ft high, and there are three small stupas which were built as a symbol of peace. Tourists can obtain a one-day visa to visit Payathonsu via this pass. It's a beautiful symbol of history and a great attraction of Sangkhlaburi.