Repository for more than 22 million pickled specimens.

The monster at the center of the Darwin Center Spirit Collection.

Eighty million natural history specimens call this gargantuan museum home.

The final resting place to 300 Victorian-era pets hides inside the city park.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

Giant, friendly pelicans in Central London, the most unlikely of places.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

A hands-off space for graffiti artists to hone and display their skills.

Amsterdam's Red Light District leaves little to the imagination.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

The recovered bones of martyrs slaughtered during The Terror are on display in this church crypt.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

Hundreds of caves once used to store grains and animal feed.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

The construction of a tram line unveiled hidden remnants of the old medieval city.

This massive blockhead sculpture hides an entire library.

Dynastic Home of the De Piro Family.

This unique building in the main square stands out among the city's typically Baroque architecture.

The remains of a 1st-century aristocratic Roman town house featuring beautiful well-preserved mosaics.

Overshadowed by other, more famous Maltese catacombs, this ancient burial chamber has one of the best examples of a ritual agape table.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.