We have the world's tallest free-standing statue - the 76-foot-tall Golden Driller in Tulsa.
We have a spaceport.
The musical Oklahoma! was the first for the writing team of Rodgers and Hammerstein.
Oklahoma has the most turnpikes of any US state with 10.
Every county in Oklahoma voted Republican in the last two Presidential elections.
There are probably more, but I can't think of them right now. After living here for over thirty years, you'd think I would have more interesting facts. I'm just going to blame it on living in a boring state.
Let me know in the comments if you can think of anything interesting about Oklahoma.