The village closest to the national park - I've heard you can take a boat up the river and that it is amazing to do it around sunset. Plan to head back here in the future for that.
The main part of Prayakan Cave. Apparently the sunlight is amazing between 10:00 am and 10:30 am, but we missed that window of time. It was still pretty nice! My camera cannot do justice to how tall the walls of the cave are.