The strange phenomenon causing gravity to "work backwards" on this hill has been blamed on the paranormal.

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

An obscure waterfall that looks like something out of a fantasy novel.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

Rustic natural hot springs in the deciduous rain forest.

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

Where else would a linchpin of post-colonial Native American cuisine anchor the menu but a museum?

Providing the soundtrack to the golden years of the Seattle grunge scene.

A sliver of nostalgia in Seattle's Viretta Park.

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

This historic building provides a powerful glimpse into the lives of Japanese Americans forced to relocate during World War II.

This edible park is open to any and all foragers.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

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

Annual technopop celebration of peace and love.

The house that took a plunge into the facade of a museum.

This museum is dedicated to the little known ancient Roman history of Vienna.

Devilish masks, handicrafts, and pieces of old buildings create a snapshot of life in a historic Alpine region.

Two nations form a rare four-sided border at the peak of a mountain, philosophical questions result.

These 12th-century catacombs carved into a mountainside were a place of mysticism and Christian hermitages.

A breathtaking viewing platform over the Alps.

Inside the corridors of this flea market, visitors are sure to find some obscure and odd treasures.

The housing complex served as an anti-fascist fortress during the Austrian Civil War.

The world's most important buildings shrunk to a tiny size.