Museum in a swimming pool where the water still flows.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

Northern Ireland's Brobdingnagian stepping stones.

The atmospheric road was never meant to be so creepy.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

In a small churchyard in Dingolfing, Germany the quaint Schusterkapelle is there to remind you of your imminent mortality.

The oldest Jewish cemetery in Europe survived Hitler's Germany.

A small but immensely extravagant palace built by the "Night King."

Terrifying derelict military hospital once housed a recuperating Hitler.

Pop culture has helped to keep this iconic British building from being destroyed.

A historic arboretum and non-conformist, non-denominational park cemetery.

Remnants of a Victorian garden feature sitting in public woodland.

A cluttered and astounding collection of antiquities and curiosities.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

The bones of some 7,000 soldiers killed in the historic Battle of Solferino are stored here.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

A 1,000-year-old church holds the bones of the Christian martyrs who died hiding inside it.

Geometry and mystery come together in an epic show of octagonal masonry.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

These medieval skyscrapers dominate the skyline of this small Tuscan town.