In Tucson a giant metal snake helps pedestrians cross a busy highway.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The first declared National Monument in the United States.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

A geological mystery on Camelback Mountain.

At 207 feet, one of the world's longest continuous escalators.

The most decorated dog of World War I is preserved in the Smithsonian.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

Historic site where Native American hunters once trapped and killed buffalo.

This house was largely built out of hundreds of thousands of discarded glass embalming fluid bottles.

A beautiful geyser under environmental threat.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Jurassic Park—A Still Life.

The largest island on the great salt lake is home to curious creatures and strange stories.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

Visitors to this library are in for a real-world education in modernist architecture.

Largest collection of mounted dinosaur specimens in the world.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

Miraculous tree that seems to sprout out of solid rock.