Well we have lots of Native American Museums and Culture. We have "the center of the Universe" here in Tulsa, that is where you stand inside this circle and talk, no one can hear you except yourself ( the circle is outside in the public). Lots of museums (Pioneer woman museum), a Blue whale 🐳 on a pond. ( Kind of hard to describe) you can find it online though. The Tulsa underground tunnels you can take a tour of.
Woolarock museum. In Oklahoma City they have the Baseball museum, the firefighters museum, the Cowboy museum/ hall of fame, the toy museum, we also have the Gloss Mountains, so much more but that is some of it. I'll post a link in another thread for things to do here.