Quite possibly the last cross all humans will ever see.

Direct, creative challenge to Mother Nature's winter wrath.

Duluth mineral magnates built this charming art deco lodge to be their private clubhouse.

These curious caverns have been home to mushrooms, gangsters, and disco.

This underground transport hub doubles as an art gallery.

An eatery within the Minneapolis American Indian Center writes colonial ingredients out of the story of Native American cuisine.

This modest plaza in Moneygall, Ireland has cashed in on its distant connection to the U.S. president.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

An opal mining town in the middle of Australia where people live, worship, and shop underground.

What started as a way to address damp basement walls turned into a house filled with intricate hand-carved designs.

Siberian whale bones stand as cairns marking location of an ancient butcher yard.

Inside the dome of this gigantic, Saturn-shaped building is one of the largest planetariums in Asia.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.

If it feels like a speakeasy, that’s because it probably was one.

The world's first combination ski slope and power plant.

What happens here stays here – unless it affects the whole world.

A gorgeous gilded tower houses what may be the world's largest collection of gin.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

A steampunk wonderland that preserves America's history of industrial innovation.

This simple frog painting created by musician Daniel Johnston embodies the spirit of Austin.

Walk through depictions of the torture inflicted on those who go to Buddhist hell.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

A house and yard adorned with bizarre concrete sculptures in a Milwaukee suburb.

A restaurant on Staten Island showcases a different grandmother’s cooking every night.