Lok Krathong is one of Thailand's most important holidays, the "festival of lights" which honors the spirit of the river. On November's full moon, people will come out to the rivers to float a "krathong", a banana leaf basket with flowers and candles. Last year, we went to River Festival 2015, a large-scale Loi Krathong festival sponsored by the Ministry of Tourism in Bangkok's Old Town. The festival took place on the Chao Phraya River across seven piers. There were plenty of Thai snacks to try, cultural shows, and the chance to make your own krathong. The best part? It's all free!