Most-visited and most-photographed slot canyon in the American Southwest.

Volunteer-run library dedicated to exploring five decades of activism history.

Neon signs that grace the windows of Bergdorf Goodman's and Tiffany & Co. come from this studio in Brooklyn.

A library and shop devoted to the body, mortality, and bringing to light forgotten or neglected histories

A huge resale shop for the cast-offs of the film & television industry.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Home to the deepest rift anywhere on Earth.

Despite his legacy of work in Spain, Cuba, and Florida, the larger-than-life writer's grave is a simple affair tucked in an Idaho cemetery.

An architect's childhood fantasy treehouse made real.

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

A beautiful geyser under environmental threat.

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

The only structure left with direct ties to the Salem witchcraft trials of 1692.

A once grand hotel is being retaken by the wilderness it once capitalized on.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

The famous facade of Grand Central Terminal hides a regulation tennis court—and it's not the first one.

A no-frills cinephile haven known for showing offbeat, underseen films.

Constructed in the 1920s, this former pencil factory is now an office building.