Five million people are laid to rest here, more than the population of Madrid itself.

This small and often-overlooked museum holds some of Spain's finest artistic treasures.

An iconic and controversial ancient Iberian funerary urn with a hauntingly penetrating gaze.

This embalmed man is one of the best preserved mummies from the Canary Islands.

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

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

Grave of the man allegedly responsible for a series of infamous murders in Boston in the 1960s.

Iceland's only steampunk shop imagines a retro-futuristic world that never was.

The mass grave of the 27 victims of the "Vampire of Hanover."

The Grand Lodge of Ireland is one of the oldest in the world, full of fantastical, elaborately themed rooms.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

The bartenders at this crime-fighting theme cafe are actual private detectives by day.

If Hello Kitty were Mickey Mouse, this would be Disneyland.

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

One of Ireland's most infamous prisons for rebels including men, women and children.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This Irish museum in a historic 19th century market pays tribute to the glory of butter.

An oddly conical beacon perched atop beautiful Irish cliffs.

An important landmark in the history of algebraic logic.

A tribute to the incredible generosity the Choctaw Nation showed the Irish people during the Great Famine.

Japan's largest area of "pink moss" turns the hillside bright pink every spring.