This verdant, tree-lined Reykjavik graveyard is both enchanting and eerie.

This oceanside Reykjavik spot is speckled with recycled sculptures and large stones.

This stunning concert hall has become a symbol of Iceland's national recovery.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

The larger of two volcanic peaks rising out of the crystalline waters of the Caribbean.

Come for the springs; stay for the mud bath.

A historic fire call point.

This obscene artwork on the side of a newspaper office pokes fun at a rival paper's former editor-in-chief.

Known simply as "The Hand," this famous public sculpture in Berlin was featured in a Depeche Mode music video.

This mansion oasis contains gardens, sculptures, and fountains just off the busy Plaça Kennedy in Sant Gervasi.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

Part of the medieval watchtower is displayed in an otherwise ordinary parking garage.

The now-quiet remains of coastal artillery defenses that were used in both World Wars.

The UK's oldest theme park slowly slips away.

This hill and tower are steeped in legend, from King Arthur to the Holy Grail.

A dark Victorian well house now plays host to mystical waters and pagan shrines.

In the ruins of Glastonbury Abbey lies the alleged resting place of the legendary king.

A six-ton wedding present for the King of the Scots.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

These 12th-century catacombs carved into a mountainside were a place of mysticism and Christian hermitages.

Terrifically morbid cemetary and site of famous Paracelsus' grave.