Foreigners can cross into Laos at Nong Khai, Nakhon Phanom, Chong Mek (near Ubon Ratchathani), and Mukdahan. You'll need a Lao visa ($36), which can be obtained from the Laotian Embassy in Bangkok, the consulate in Khon Kaen, or directly at the border crossings. Some hotels and guesthouses in Nong Khai can also arrange visas for an added fee.