Go surfing on this urban wave, "hacked" by local surfers.

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

The footprint of a frustrated devil in Munich's Cathedral.

A fearsome dragon clings to a corner of Munich's city hall.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

Two stone columns flank the grand Venice square, but there were supposed to be three.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Italian cave with exceptional acoustics and an unsavory history.

According to Greek mythology, this natural spring is the home of a freshwater nymph.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

An impressive bridge over a ravine also served as an aqueduct.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

A long-buried ancient ruin unearthed right in the middle of the city.

Macabre symbols of death and mummies on display set the tone of this Italian purgatory church.

Southern Italy's spinning top village.

The sunlight passing through the opening of this huge cave system creates a magical effect.

Geometry and mystery come together in an epic show of octagonal masonry.

Three underground crypts and a pointed arch under the bell tower make this cathedral unique among Romanesque churches.

A dead saint, a deadly poison, and a mysterious holy ooze.

A space dedicated to contemporary art and culture, co-chaired by fashion icon Miuccia Prada.

A brutalist gem towering over the heart of Milan.