The red letters in the literary pavement leading to the library form a mysterious code.

Liechtenstein's royal family calls this medieval alpine castle home.

Ramsgate’s Royal Harbour has the unique status of being the only Royal Harbour in the United Kingdom.

In the summer of 1957, a massive architectural exhibition showed off the future of urban living in this German neighborhood.

A haunting contrast of trains that both saved and took the lives of Jewish children in Nazi Germany.

After local authorities changed the design, the building's architect, Le Corbusier, wanted nothing to do with it.

A beautiful gorge filled with streams and waterfalls.

One of Serbia's oldest luxury hotels and a nostalgic echo to Yugoslavia in the state's former capital.

The former "holiday home" for monks at the Durham Cathedral.

Though this bridge was originally built in the 12th century, only one of its 10 arches dates back that far.

This World War II bunker is now a shrine covered with sea shells.

The longest staircase lock in Britain.

Designed to allow funerals to proceed over the River Dulnain.

Named for its similarity to the tip of a violin's bow, this striking formation was created by millions of years of erosion.

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

This severely painted building has a twisted connection to the witch hunts of the 1640s.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

The heads of two giant mythological water horses honor Scotland's horselord past.

A trio of giant megalithic stones in the middle of a golf course.

Every St. Andrews student knows to avoid this inscription for fear of a martyr's curse.

This effigy was crafted to annoy a neighbor after a civil dispute over a foul smell.

This single-track road rewards brave drivers with stunning Scottish scenery.

A sea cave with a waterfall and Viking past

The ruins of a defunct limestone quarry still haunt this Scottish promontory.