This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

Remote, volcanic island that Darwin, Hooker, and the Royal Navy shaped into a thriving, artificial ecosystem.

Rather than a run-of-the-mill franchise hotel, this lodging has been decked out in dinosaur decor.

A dangling church built over a Colombian gorge.

A faux desert landscape in the middle of the jungle that sprouts oases during the rainy season.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

The first "Hall of Fame" in America was designed by legendary Gilded Age architect Stanford White for what was then the NYU uptown campus.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

The true jewel of Africa's west coast known as "Africa's Last Eden."

Play heads or tails with thousands of different coins.

A terrific purveyor of natural history objects and curios.

This mountaintop lake bubbles and steams in a perpetual boil, thanks to its direct link to the Earth's interior.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

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