My husband, myself and our sons girlfriend will be visiting Phoenix from March 25 - 30 for Spring Training. Our son is interning with the Milwaukee Brewers as a Strength and Conditioning couch and won't be able to join us for much sightseeing. We plan to hit baseball game nearly every day that we are there but would also like to do a little sightseeing but I'm having a bit of trouble finding things.
I've found the Mystery Castle which looked interesting. We'll have a rental car so driving is ok - but it can't be too far away.