The "lovely red Vega" of the legendary record-settling pilot.

"X" marks the spot of an echo chamber in the middle of a plaza.

This pre-Revolutionary War grist mill ground corn and flour for soldiers in seven American wars.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

The prototype for all Nazi concentration camps.

A museum documents the development of the invention that tamed the Wild West.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

The king of U.S. high points towers over every other peak on the continent.

The last bastion of Roman presence north of the Alps looms over a German town.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

You may get stranded and everyone's peeing in the water, but at least there's cocktails!

A six-ton wedding present for the King of the Scots.

Tucked away inside a historic Savannah hotel is a hundred-year history presented in ladies' lids.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

Museum houses an impressive display of the origin and artistry from the now-quaint invention's history.

A bizarre roadside attraction and the first instance of miniature golf in the world.

These ancient ritual mounds are our best window into the culture of the ancient Mississippians.