This hauntingly beautiful cemetery outside a medieval citadel is full of winding paths and ivy-covered graves.

This massive underground salt mine now holds a sci-fi theme park in its depths.

Conspiracy theories and occult legends surround this mysterious natural rock formation.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

At 22 feet tall, these Bronze Age monoliths are some of the tallest standing stones in the United Kingdom.

This sculpture marks the spot where one of the greatest Roman rulers was proclaimed emperor.

Makers and sellers of the original and finest York Ghosts.

Something's watching you.

This once-derelict building is now one of the most beautiful bookstores in the world.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

Romania's triumphal arch looks out over Bucharest.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

The largest greenhouse in the world is home to over one million types of plants.

This ruined 15th-century hermitage is steeped in myth and mystery.

This mountain is one of the largest in Scotland but is better known for its hollow insides.

Overlooking a Scottish loch, this beautifully crumbling castle once inspired a poem by William Wordsworth.

This eclectic sanctuary is a hodgepodge of various architectural styles, all crammed into one building.

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

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."

This tin chapel was built by POW's during World War II and is painted to look like something much more grand.