The Nasher Sculpture Center...............it's gonna be a beautiful weekend, with no football games.............the Nasher is a great place to visit for a few hours.....the 1st Saturday of every month is free. Thanks to the generosity and support of Target.
Their cafe is an excellent spot to grab a bite to eat; very pleasant.
And since your downtown, visit Klyde Warren Park.
http://www.nashersculpturecenter.org/