Rub it for a bit of good luck.

A miraculous three-handed portrait of a saint can be found inside this church.

Site of the first hot air balloon flight conducted by the first English balloonist.

A hidden plaque is the only reminder of the lost palace where two storied English kings were born.

These lesser-known Maltese catacombs date back over 1,700 years.

This subterranean necropolis holds three floors of antler-dug grave caves.

In the sleepy town of Gozo exists a reproduction of the entire town of Bethlehem.

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

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

A haunting collection of the vanished and disappearing natural world.

A Hungarian pharmacy museum with a box full of mummy powder.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

The crumbling remains of the first Black-owned and operated hospital in Kansas City.

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

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

A former telephone box found new life as a photo booth and charity fundraiser.

Enter this small nook and you'll be surrounded by 360 degrees of street art.

A verdant 17th-century-style garden hidden along Edinburgh’s Royal Mile.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

A slice of central Asia in the middle of Berlin.

This enormous abstract sculpture is part jungle gym, part elaborate noise-making machine.

This unusual hostel provides a glimpse of life in a city under siege.

A charmingly eccentric magma chaser presents his complete history of the island's eruptions since 1947, in cinematic form, just for you.

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