These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Continuing the tradition of the dime museum in style.

Eighteen miniature death-scene dioramas.

One man's homage to the sun continues to grow like a glass fractal.

A giant Troll lurks under one of Seattle's oldest bridges.

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

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

A layered tribute to the work of mosaicist Isaiah Zagar.

Elevated freight railway turned wildly successful urban park.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

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

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A one-of-a-kind collection of a unique medium.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

An emerald-green grotto just a short trip from Austin.

This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

A pocket of jungle amidst urban expansion in Panama.

A huge, bustling local market in Panama City.

An abandoned Ecuadorian prison that once held ex-presidents and notorious con artists is now a carceral museum.

Home of the "true" equator.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.