A geological mystery on Camelback Mountain.

Once disputed as the largest sundial in the world.

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

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.

More than 7,000 gallons of water pour over these cascading red quartzite waterfalls every second.

A fitting attraction for the corn capital of the world.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The first declared National Monument in the United States.

A sprawling cave network created by a lone lava tube.

The longest and widest floating bridge in the world.

A 1,000 pound brass bell commemorates a time when this small maritime neighborhood was actually its own separate city.

Once a year, thousands of naked cyclists flood the streets of a Seattle neighborhood.

With its vaulted ceiling and gilded details, this University of Washington library would feel right at home inside an old palace.

Spanning an elevation of 160 feet and containing 388 steps, this is Seattle's longest staircase.

A beautiful final resting place for some of the noteworthy deceased.

Now housed in a museum, this giant pink elephant stood in downtown Seattle for more than 60 years.

A normal, unassuming pedestrian overpass has been the demise of many, many trucks.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

A public fountain that spouts "health water" from a nearby spring.

Shakespeare has been brought to life in this open air theater for the better part of a century.

A tourist attraction founded around a slumping cabin.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

Five candy-colored villages on the Italian Riviera.