Venice's island of the dead.

Go inside to really appreciate this 500-year-old technological masterpiece.

Five candy-colored villages on the Italian Riviera.

A lover's walk between hilltop towns, decorated with graffiti love notes.

Fortified medieval tower house with lovely roof garden.

The naturally mummified body of a peasant girl saint.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

The largest and most famous wax anatomical collection anywhere in the world.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

After a nearly successful attempt on Hitler's life, the conspirators met their fate in the courtyard of this Berlin building.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

An ancient Egyptian temple in the middle of Madrid, Spain.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

A Nesting Doll of Churches.

Op-art architecture designed for happiness.

Macabre museum devoted to historical Viennese murders.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.