The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

The Pope’s secret escape route.

Rome's semi-secret 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.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

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