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

Secret gardens just a few miles from downtown Atlanta.

This intricate Hindu temple is the largest of its kind outside of India itself and was constructed like a giant puzzle.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

This North Carolina museum is keeping the pinball craze alive, with a little Space Invaders on the side.

This research center for rare prosimians is studying how they sleep to help prolong human life.

The remains of the iconic train crash from the movie The Fugitive can still be found rusting along the Great Smoky Railroad.

North Carolina's finest examples of Native American pictographs have survived for 5,000 years.

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

This award-winning men's bathroom was just too beautiful to not allow women to see.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Mile-long cave system near Great Smoky Mountains.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

More than five miles of underground passageways.

Enormous lake at the bottom of a unique cave system.

One Confederate statue that accurately reflects the ugliness of its subject.

This replica of the Greek structure is in the heart of Nashville.

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.