The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

Known as "The Hill of the Little Devils."

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

The cliff and rock formations are made out of Sioux Quartzite.

America's silhouette includes 100 square miles of wilderness jutting into Canada thanks to an old mapmaking error.

Just a man taking his prehistoric pet for a stroll.

Canada's accused-traitor-turned-folk-hero is buried under a red stone in a ring of his own.

The historic home of the pivotal political activist who led the Métis people in rebellion against the Canadian government.

A monument to the forgotten French explorers and their landmark expedition.

This beautiful ancient site is dotted with perforated sandstone pillars considered sacred by some Native American groups.

Dedicated to the inventor of the paint roller.

This ultra-modern burial building would have stacked the dead like a giant filing cabinet.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

This German art chapel is perfect for those who like their worship hard, modern, and utterly alien.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Tour the luxe "glass cage" that inspired and unnerved the architecture world upon its debut.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

This simple Manhattan salt house is artfully shaped... well, like a giant granule of salt.

This stunning concert hall has become a symbol of Iceland's national recovery.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

A colorful architectural gem in Seattle's uniquely modern Central Library.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”