More to explore:
Sunrise Over Salton Sea - (CC)Bill Gracey - www.flickr.com/...
St. Louis City Museum's seven story slide.
An ancient 4,800-year-old Great Basin Bristlecone Pine, the Methuselah Tree grows high in the White Mountains of eastern California.
Cinder Cone (by Vision Aerie) Cinder Cone 3259 Between Flagstaff and Tuba City, Arizona, part of the San Francisco Peaks complex.
phantom chicago: see the city's unbuilt visionary projects