Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

The ornate miniature mansions were built for Istanbul's feathered residents.

A marvel of Byzantine engineering under the streets of Istanbul.

The eclectic home of a leading Turkish architect is a gorgeous piece of eye candy.

A space dedicated to contemporary art and culture, co-chaired by fashion icon Miuccia Prada.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

The secret medieval communication system will whisk your words above the noise of the crowd.

A Milanese café entirely designed by the American director Wes Anderson.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Breathtaking and huge 430 year old maps of Italy.

An ancient knight and a symbol of the city's freedom.

A musical instrument played by the sea.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

An ethereal glowing blue ocean cave in Croatia.

A tiny church on a man-made island in the Adriatic.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

A curious little museum dedicated to the furry feline in the cat haven that is Old Town Kotor.

Stuck in the arcade of Casa Isolani are three arrows of mysterious origins.

These ruins of a Phoenician sanctuary in Sicily have a dark history.

A local legend says the theft of a holy relic explains the hand-shaped bloodstain on the facade of this cathedral.

Built as a defensive structure, this medieval walkway road offers a unique view of the village of Brisighella.

During World War II, a number of important sculptures and paintings were moved to this castle for safekeeping.