The bus station in Nakhon Phanom. Bus travel in Thailand is extremely cheap, and it is a very good way to see the country. From Nakhon Phanom one can take a bus directly to Thakhet in Laos, Bangkok, Mukdahan, Khon Kaen, Sakhon Nakhon, and Udon Thani. If you are patient and you have a lot of time on your hands, then taking the bus is in Thailand for you. Avoid trips through the mountains of Petchabun Province. Not particularly safe.