You can learn about the history of Nong Khai with a stop at Thai-Laos Friendship Bridge. While in this walkable area, find time to visit its shops.
Explore the great outdoors at Chet Sao Noi Waterfall National Park, a lovely green space in Muak Lek. While you're in the area, stroll along the riverfront.
You can find out about the history of Khaem Son with a visit to Wat Prathat Phasornkaew. Wander the gardens or discover the area's mountain views.