Site of the greatest known waterfall that ever existed.

The site of the Wellington avalanche, one of the America's worst railroad disasters.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.

The highest point in Washington state is a volcano covered in glaciers.

The illuminated falls are a gem in North Cascades National Park.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

This former coal gasification plant found a curious second life as a popular public park.

A wall of chewing gum moonlights as collective art.

An extraordinary mixture of natural beauty and man-made phenomena.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

A giant Troll lurks under one of Seattle's oldest bridges.

This statue of the "father of television" stands prominently in the United States Capitol.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Perhaps the most scandalous statue of America's first president.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

An innovative attempt to break a siege in the American Civil War still scars the earth today.

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

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

The first declared National Monument in the United States.

A former major munitions plant that has been converted into a sprawling art space.

The unusual patterns in this rock formation result from two distinct modes of weathering.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.