High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

A winding, cliffside stretch of road overlooking the Delaware River.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

This ancient theater was once the home of fierce gladiatorial battles.

Despite centuries of architectural innovation, this French castle is being built like it's the 13th century.

Historic medieval fortified city in southwest France.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Recently restored menagerie of Victorian-era beasts.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

Follow the original medieval paths that wind through this intriguing section of the city.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

A popular European tradition makes its way to the states on one of America's most famous bridges.

Once a dumping spot, now a park with a kayak launch.

Down the road from where the Wright brothers lifted off is another flight tribute practically hidden from sight in the woods.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

One of the best places to see feral Colonial Spanish Mustangs in the United States.