The Pope’s secret escape route.

A collection of objects supposedly singed by the hands of souls in purgatory.

Architectural monsters are devouring this palace's every door and window.

An alchemist's "magic door" stands in the middle of a Roman park.

Architectureal fantasy quarter of Rome.

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

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.

This charming candle shop has been in business since 1789.

The world's oldest bookshop still in operation.