Careful though...if it rains like it is now (not a problem from the origonal post date) the slot canyons are a bad idea.
A print viewing at the CCP in Tucson is always a good one. Open to the public.
And they a great Weston/Mather exhibit right now. It is funny to see how they avoid the words "affair", "adultery", etc. in it. It is merely a "Passionate Collaboration".