Phu Foi Lom - This is a major eco-tourism site, located in the Pa Phan Don-Pakho National Forest.
There are also several caves, waterfalls, rapids, and other historical sites to visit.
Local food products include the Chinese sausage called kun chiang, moo yong, which is a pork floss, moo yo, which is steamed pork, and moo naem, which is a sour pork product.
If you wish to enter Laos via the Friendship Bridge at Nong Khai, the visa-on-arrival fee for foreigners is US $35 and entitles you to 30 days in Laos You must have two passport photos available. Thais pay a different fee of their own. Air conditioned buses to Vientiane depart six times daily from Udon Thani. The fare is 80 baht one way.