The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

These narrow stone granaries have been used to store and dry out grain for hundreds of years.

Bits of flat terrain surrounded by cliffs make one of the most beautiful landscapes in the Azores.

Panoramic views from the mountains over a facility built to provide tuberculosis patients with fresh mountain air.

These rock drawings in the Côa Valley also create an ancient optical illusion.

This Portuguese bullring is built right into the caldera of an island volcano.

This little-known national museum houses over 40,000 works of art from across the world.

A majestic hotel for dreamers rises from the center of a fairytale wood.

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

A hidden three-foot-wide house separates these two regal churches.

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

A two-way chairlift system between Zugliget and the highest point in the city.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.

Some of the greatest minds in the history of Hungarian art and science converged in this café.

A history of heat is on display at this unique Austrian museum.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

The final resting place for the remains of 143 Habsburg royalty.

This Gallo-Roman sanctuary is dedicated to Serápis, god of the underworld.

This abandoned fortress still stands guard over the Guadiana River despite a history of warfare.

This museum contains a vast array of puppets and marionettes from all over the world, featuring incredible works by Portuguese creators.

An abandoned anti-smuggling station decays along the boundary between Portugal and Spain.