This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

A stealthy Apache hideaway that became the haunting site of a mass grave.

A small canyon with petroglyphs and a seasonal waterfall, only a short hike from the remnants of old Route 66.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

Ancient pueblos built into the base of a natural canyon wall.

This former factory has been transformed into a technicolor wonderland, where dozens of local artists have collaborated to create a real choose-your-own-adventure experience.

An abandoned Victorian house transformed into a museum and store filled with taxidermy and vintage goods.

A once-groundbreaking power plant turned into a hotel and mini-museum of archeological and geological wonders.

A curious collection of oddities including a lock of Alexander Hamilton's hair and Harry Houdini's ouija board.

An exotic reptile facility showcasing some of the rarest, most venomous snakes in the world.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

A mysterious castle built as a monument to lost love.

HFH's slum simulation is either a noble recreation of poverty or a cringeworthy attempt at same.

Working compound meant to allow visitors to reclaim the values and traditions of the past.

A community of collapsing homes more than a mile out from the Florida coast.

One man's grief over the national tragedy has manifested in a pod of homemade whales on his front lawn.

Carved faces add a touch of magic to this island's impressive oak trees.

This picturesque ghost town is located on the banks of the Suwannee River.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

In memory of the 110 victims of ValuJet Flight 592 that crashed in the Everglades.

Jacksonville's highways rendered this century-old grammar school unusable.

Gutted airplanes slowly decay in a Florida field.