Folklore says this medieval fortress was plopped atop a portal to hell to trap the demons below.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

An unexpected ghost village lurks on the southeast coast of Tenerife.

At the point of oceanic inaccessibility, you can't get farther from dry land without leaving the planet.

The remains of Crystal Palace Great Exhibition of 1851.

This former rail stop in Utah was abandoned, repopulated by some nostalgic friends, and now is home to a single DIY aviator who lives in a hangar.

Gnomes have taken over a rest stop on Australia's longest straight road.

The oldest bookstore in Iceland.

All that remains of this once-booming mining town are the ruins of a saloon.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

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

This small New York museum examines Chinese history from its origins right up to its arrival in the city.

This overlooked gem outside Niagara Falls preserves and celebrates Iroquois culture.

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

Like a kitschy mirage in the Mojave, this eatery serves up classic 50s-style diner meals and a dinosaur sculpture garden.

This now-abandoned outcrop is an important Native American spiritual site, overtaken by European settlers and mining pollution.

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

What was once the largest mine in North America has left behind a hollow hill filled with bright blue waters.

Home to the world's oldest wooden building.

A Jewish deli run by Yemeni Muslims in an Afro-Caribbean neighborhood is quintessential Brooklyn.

A monument to Lenin has been transformed into a statue of everyone's favorite black-helmeted, fool-choking Sith Lord.

Sweden's oldest street has not changed for nearly a millennium.

This sweet Southern elixir comes from what may be the oldest grape vine in North America.