Bryce Canyon: Hoo Doos galore
Bryce Canyon is an interesting National Park that is like walking through a Dr. Suess book with weird shaped rocks (hoo doos) and carved doorways.
We finished the basic trails through the amphitheatre in about 2.5 hours (even going the uphill/tougher route), and I wouldn't budget for more than a day at Bryce.
I recommend parking at Sunset Point, hiking the Queen's Navajo/Combination Loop (2.9 miles), walking from Sunrise Point back to Sunset Point along the rim trail/road, and then driving around and seeing whatever else you want to see. (the Natural Bridge, Inspiration Point, etc.) We started at Sunrise since we found parking, but the views are much better at Sunset and the hike is much easier from Sunset to Sunrise than Sunrise to Sunset.