Famed for its seven-tiered waterfall, Erawan National Park is an extremely popular (ie crowded) place for locals and visitors alike. Erawan waterfall (trail open 8am to 5pm) gets its name as some people think the top level resembles Erawan, the three-headed elephant of Hindu mythology. Walking to the first three tiers is easy, but after that walking shoes and some endurance are needed to complete the 2km hike.