Tucked into Pittsburgh’s North Side, the Mattress Factory is a labyrinth of permanent, room-sized installations where artists transform entire spaces into mind-bending, immersive worlds.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

The remnants of the fortress that saved Georgia from the Spanish still stand guard on their swampy island.

The first public building in Savannah to offer air conditioning was a luxurious cinema that still operates today.

An early-19th-century hotel with a past that is steeped in the Civil War.

This quirky curiosity shop takes its cues from the world's bazaars.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

This Rodin sculpture in Cleveland bears the lasting marks of a 1970 bombing.

The taxidermied body of a bear that was a casualty of a drug trafficker’s bizarre death.

A dazzling display of lights and crystals.

The Midwestern United States' tribute to Michelangelo is a foam statue sprayed with gaudy gold paint.

Roadside Americana, fairy tale characters, and Austin quirkiness come together at this magical course in the heart of Texas' capital city.

The heroic sled dog of the 1925 serum run is preserved in taxidermy.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

This statue intended for children to enjoy became a minor political spat.

A modest walled graveyard where nobody is actually buried.

Beside a busy highway, a colony of Great Blue Herons raises hundreds of offspring each year.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Where beautiful signs live on forever.

A colorful square marks the heart of the city's LGBTQ community.