Cambridge’s century-old outdoor swimming pool is tied for being the longest pool in the United Kingdom, but it is also unusually narrow.

This former medical factory gives home to cutting edge arts in the shadow of a gas works.

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

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.

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

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

The Jesus tree of Malta bears a striking resemblance to Christ on the cross.

The design of this modernist church was revolutionary when it was constructed in 1942.

This garage is frozen in the late 1990s, full of rare and untouched cars and motorcycles.

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

Enigmatic tombs and cave dwellings on the outskirts of a rural village.

At more than 5,000 years old, these structures are among the oldest free-standing stone buildings in the world.

Hidden beneath a restaurant, underground tunnels tell the story of Malta’s tragic role in World War II.

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

Dynastic Home of the De Piro Family.

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

After 400 years of being closed to the public, this monastery's underground tunnels and secret garden are now a museum.

Ancient mysterious ruts carved in the bedrock.

This 50-foot-deep sinkhole created in the 14th century is home to rare plants and fungi.

This Stone Age solar temple aligns with the sun on each equinox and solstice.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

The fishing boats that moor in this small lagoon enter and leave through a tunnel to the sea.

One of Manchester’s museums has gathered and preserved British political paraphernalia covering over 200 years.