A Hungarian pharmacy museum with a box full of mummy powder.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

Lions and tigers and leopards, servals, pumas, bobcats, lynxes, and ocelots... oh my!

A medical facility that has been kept frozen in time.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

The oldest of Venice's plague quarantine stations, designed to keep the medieval city safe from disease.

An exclusive waiting room built for the royal family in the 1920s is hidden in Milan’s central station.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

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

Portugal's National Pantheon has a history of curses, collapses and financial problems.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

An abandoned Roman salami factory has found new life as an art space home to 200 squatters.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

This crumbling Portuguese ruin overlooks the populace it once ruled.

An exquisite collection of fairytale conveyances that puts most car museums to shame.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A serene public space nestled within the remains of Glasgow’s Victorian maternity hospital