Admission is free, so buy something in the gift shop if you want to support conservation & local Native Americans. The views from inside are fantastic with large glass windows overlooking the dam. There are a lot of exhibits and things to read on the inside, with ample air conditioning to escape the heat, and a small dinosaur footprint exhibit outside that you might not pay attention to, if you don't know it's there. They had a movie program starting but I did not have time to stay for it as I was just passing through. I would definitely stop here again, and allow more time to explore as the bridge right next door appears to allow foot traffic over the canyon.
