Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

Tucked away behind the mansions of Mayfair, this picturesque garden is a hidden London treasure with a spooky past.

Historic cuisine meets fine dining in a hotel-restaurant overlooking Hyde Park.

The bones of two medieval royal lions were discovered at the historic fortress.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

A tribute to an explorer and naturalist often overlooked by history.

Repository for more than 22 million pickled specimens.

The beloved beast's taxidermy remains sit in the Natural History Museum's cafe.

Eighty million natural history specimens call this gargantuan museum home.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

This almost-forgotten underground dungeon housed several convicts over the years, including Caravaggio.

Dynastic Home of the De Piro Family.

This church is named for one of the most dramatic tales in the early Christian church.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

Abandoned Roman Catholic chapel abused by Satanists before being restored.

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

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

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

This sculpture is an instrument played by the swell of the seas.

Huge winged monument in the United Kingdom.

This tidal island, a sacred site in early English Christianity, was the target of a notable Viking invasion.

This round structure dotted with portals is one of several pieces scattered throughout Lancashire.

These Roman ruins in England’s Lake District are 2,000 years old, but look pretty good for their age.