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.

This ruined travelers shelter sits abandoned in a desolate bog of Flow Country.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

The discovery of this Neolithic settlement, which contained a Stone Age "cathedral," threw archaeologists for a loop.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

Enter the world under the hill at this ancient UK burial chamber.