Sukhothai's Monuments: It is easy to spend days of speechless soul-searching after encountering the mystical monuments of Thailand's 13th-century capital.
River Views in Ayutthaya: This city, which can be visited as a day trip from Bangkok, combines great river views—most of its hotels offer them—with an island full of fascinating wats.
Loi Krathong: The Central Plains, Sukhothai in particular, is one of the best areas to experience this festival. Thais set elaborate candle-bearing floats out into the river, creating a memorable light display.
Myanmar for a Day: Myanmar (Burma), a country ruled by a military junta with a bad human rights record, is a mystery to most people. A day trip across the border from Mae Sot may not provide a deep understanding of the country's situation, but it's a start.