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

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

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

This shuttered power plant is now Turkey's first industrial archaeology museum.

Quite possibly the oldest love poem known to humankind.

Designed as a reminder of one of the darkest moments in Austrian history.

A silly medieval mural preserved on the side of a Viennese house.

These relics of the city's past now exist as a prominent modern feature.

Visiting this café is like visiting the Austrian grandma you wish you had.

The house that took a plunge into the facade of a museum.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

This former insane asylum now holds a pathological anatomy museum.

Journey through a mesmerizing array of board games inside this museum.

One of the best collections of wax anatomical models in the world.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Macabre museum devoted to historical Viennese murders.

A spherical "micro-nation" in the heart of Vienna.

Op-art architecture designed for happiness.

This Austrian museum celebrates the work of famous forgers and their inimitable imitations.

This charming wooden church was disassembled and moved not once but twice before settling in this Prague garden.