An unsigned roadside spring that is pure fun.

Roughly 17 million letters to Santa have found their way to this Arctic Circle post office.

The home of Iraq's former prime minister now houses historical manuscripts.

At the most northwestern point of the contiguous United States lies a trail leading through an ancient forest to stunning cliff-side vistas and massive oceanside caves.

Home to a seasonal waterfall and swimming hole in the Ouachita Mountains.

The crypt under this cemetery's chapel was used as a meeting place by Filipino revolutionaries.

Strange, gentle beasts resembling goat-cow hybrids roam within this patch of forest.

This Bhutanese site is one of eight sacred locales established by a revered 14th-century Buddhist master.

Legend has it a sacred treasure hidden by an ancient guru was revealed with a burning butter lamp from these waters.

Where giant ships go to die.

The shipyards along the outskirts of the Bangladesh capital are a flurry dangerous boat breaking and rebuilding.

Known as the wettest place on earth.

This historic textile city was abandoned after being ravaged by fire.

A small village in India bears witness to the end of birds' lives every September.

Centuries-old bridges grown from tangled roots.

A small waterfall tucked away in the forest of Harmby Gill.

This monument is dedicated to a young boy who survived a disaster that forced Edinburgh to reevaluate its building codes.

No one is sure what to do with this WWII shipwreck that sits at the bottom of the Thames, still loaded with tons of explosives.

Though difficult to access, this stunning cave has a place in Scotland's poetic history.

A Victorian marvel of engineering is now a 21st-century tourist attraction.

Britain's oldest and biggest hole in the ground.

Baked in 1898 and still almost flawless, this floral masterpiece is considered the world's oldest complete wedding cake.

A beautiful medieval bridge allegedly constructed by the Devil.

The sanctuary seems to either float atop the water or sink into the dirt, depending on the water level.