A museum in the childhood house of a medical pioneer.

This locally-famous crevasse in New York State is icy all year round.

The remains of a failed subway in upstate New York is now an underground graffiti bunker.

Eclectic architecture in the woods of New York.

A toxic ghost town sitting atop a massive coal fire.

Iconic rock formations that allow for exploration during high or low tide.

The largest tidal whirlpool in the Western Hemisphere.

These powerful, if squat, Canadian waterfalls flow in different directions depending on the time of day.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This mountain fissure hides a secret path to a secluded mossy grotto within the rock itself.

An astounding collection of medical specimens, including bits of President Lincoln.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

Resonating tubes make music from highway overpass.

An 80-year-old house built out of newspapers.

This impressive Boston holy house is the American mecca for Christian scientists.

First established in 1696, this settlement was abandoned after the Revolutionary War.

The remains of a chapel created for convenience.

4,000 monkeys used for medical testing on an island off of South Carolina.