I drive passed the Desert O countless times a week and the best time is at night! As Christy F. notes in here reviews, the Desert O is a solar powered orb-like structure located downtown near the Tucson Museum of Art. It can't be missed! If you're easily amused by lights and colors, then you'll love it! It lights up every night of the week with distinct color patterns that'll catch you eye. And as Christy F mentioned, there is in fact a secret button that allows visitors to change the colors themselves. Interpretation is all up to you friends! Every time I drive passed it I think about life-savers. The Desert O has a unique history too. This piece of public art was actually purchased at an auction for #$3500 and then donated to the City of Tucson. It's certainly an oddity, but that's what the OP is all about! read more