A small marionette collection located within the dark cellars of an 11th-century Austrian castle.

The former Mexican president kept the bullets that killed his predecessor on display in his home, now a museum.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

Dine amidst exotic plants at this former royal greenhouse.

The townhouse where the "Blood Countess" Elizabeth Báthory started her murderous career.

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

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

Legends surround an ancient tree trunk riddled with nails for good luck.

Baroque celebration of the end of the Great Plague of Vienna.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

Commonly acknowledged as the only public monument to the Devil himself.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Legends surround this natural rock formation that looks like a Moorish king wearing a crown.

This magnificent market stands as a poignant symbol of the suffering caused by the Spanish Civil War.

A celebration of solstice followed by a fiery purging of evils.

The world's first electric battery-powered submarine.

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

A colorful piece of contemporary art cheerfully clashes with Lyon's historical architecture.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

This abandoned viewing platform has become a monument to unnecessary government spending.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

The reconstruction of this prominent building fulfilled a long-written command.