The Kirkpatrick Science and Air Space museum is home to Oklahoma City's science center, a handful of other museums such as the International Photography Museum, the Air Space Museum, the Kirkpatrick Planetarium, and several others, and the OmniDome  theater.  Click here to check out their website.

The science part is fairly cool with lots of hands on stuff for kids to play with (and learn if you take the time to teach them).  The IWERKS theater is awesome (of course).  We watched "The Coral Reef" IMAX film.