Couple's personal collection of pinball machines turned public pinball museum.

A whimsical village of unique treehouses resides in a Washington forest.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

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

A walk through the historic city center, under the streets of Seattle.

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

This Wyoming town is fascinated by a particular mythical creature.

One man's ambition created this psychedelic log home.

The first declared National Monument in the United States.

This set of hot springs also comes with fantastic views.

Home to a timed geyser created by complete accident.

The mayor made the declaration in 2004.

This trail leads to a mine that was used as a sanctuary during the Great Fire of 1910.

A small section of Boise, Idaho maintains the unique culture and traditions of the Basque people.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

Home to the deepest rift anywhere on Earth.

A classic carnival ride that was carved to be untouchable.

After Havre burned down, the best place to build was under the ashes.

A classic mystery spot complete with spots that are said to make you shrink or grow when you stand on them.

"Polynesia on the Plains."

The oldest continuously-operating Chinese restaurant in the United States has been in business since 1911.

This giant meditative chakra sits peacefully in the Flathead Valley of western Montana.

This museum is a full-size replica of an original church constructed during the 13th-century.

A monument to the center of the North American continent may be off by a few miles.