Mesa Verde. I'd camped in the forest between Durango and Mesa Verde, and drove in in the morning. The short summary is, Cool ruins, but lots and lots of people, and lots of ranger hand holding. With good reason I might add, given the number of people they've got. Almost ruins overload though. The area is filled with them, and by the end of the day, stopping at every sight on the loop roads, I was almost burnt out. The ruins are huge, but if you just want to see ruins, I'd recommend going elsewhere.
Got out of town, and headed to Indian Creek.
Cliff Palace, and the previous tour group
Inside the Cliff Palace
Out of water for mortar? Storage areas at Cliff Palace
Karl at Mesa Verde
Climbing up to Balcony House
In Balcony House