A larger-than-life house of cards stands outside the house of a former fashion designer.

A brutalist gem towering over the heart of Milan.

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.

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

Dynastic Home of the De Piro Family.

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

Valletta’s outdoor theatre stands within the ruins of a 19th-century opera house.

The eyes and ears of this tower keep watch over Malta’s Grand Harbor.

The medieval home is still engraved with the symbol of the profession, an eye flanked by two axes.

For over two centuries, this palace served as a residence for the Holy Roman Inquisition's leaders, a courthouse, and a prison.

A small island with shimmering pink sands, home to loggerhead turtles and rare plants.

This stone tower was built to protect Crete from incoming pirates.

Ancient serpentine sacrifice holder that has stood the test of time.

One of the newest mosques in a city filled with thousands.

A surprising and unconventional mosque hidden in the subsoil of Istanbul.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

Taking the subway here means doing so over a bridge located in the middle of an estuary.

It's believed that this small church was connected to the Hagia Sophia via a secret tunnel.

The most metal church of all time was built in record time because of an international, pious pissing contest.

Climb a set of vertiginous stone steps to the top of this impressive ancient edifice.

A tiny park in the middle of some big power politics.

A marvel of Byzantine engineering under the streets of Istanbul.

The legendary luxury train passage is commemorated with a charming museum inside its former eastern terminus.