Places andreaderese Wants to Go

A forgotten "city of water" underneath the famous Trevi district.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

Rome’s legendary peephole vista is also a former Crusader stronghold.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

A 16th-century horror show built in a lovely Italian garden.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

The largest cave in Bosnia and Herzegovina is home to some the richest subterranean biodiversity in the world.

This unique museum focuses on the Siege of Sarajevo through children's eyes.

This top-secret nuclear bunker hidden in a Bosnian mountain has been converted to a modern art exhibition space.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.