Arizona Trip

I've promised a few people to post some photos from my trip to Arizona last month so here they are although unrelated to the general site topic.
Needless to say that Arizona is a breathtaking place and it hurts me to think that I will probably never have the chance to go back there again. I'm afraid it was a once in a lifetime kind of trip...
So, from top to bottom here's what you see:
Desert view West of Tucson
The same
Downtown Phoenix
North Arizona, early morning
Downtown Tucson. Shadow of the Cathedral on a parking lot wall