The history of sea-faring refuse and disaster is on cramped display in this Netherlands folk museum.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

A clear blue swimming hole with hidden caves, still unexplored.

Huge stone depressions which may have acted as an Incan agricultural experiment.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

The deadliest diving spot in the world is also a stunning geological marvel.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

The Buddhist temples of Yamadera, built into a mountain side, feature a viewing deck with sweeping views.

An 1814 castle that hosts an exhibit of "explorabilia".

The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A once great mansion stands in stately ruin.

This series of Armenian caves held the oldest brain, shoe, and winery in the world.

An isolated beacon with a history of grisly murder and a view of some of literature's greatest inspirations.

The trials and tribulations of marking Poe's grave.

The world's largest statue of Mao Zedong looks out over the city where he discovered Communism.

A local landmark that has become a hub of graffiti and urban exploration.

A replica viking ship from the Chicago World's Fair is still in dry dock in an Illinois park.

An acoustic anomaly with a mysterious cause.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.