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

A new sculpture calls attention to climate change in the centuries-old city it threatens.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

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

Fountain where visitors can earn a license to be mad.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

"Holy Wisdom" overlooks the city that became its namesake.

A striking symbol of the Bulgarian capital.

Oriental bazaar in the heart of Sarajevo.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

This one-time health resort was used by aristocrats around the world.

A fascinating insight into daily life in the Eastern Bloc.

A whimsical bridge adorned with decorative dragons.

This massive subterranean fissure is known as the "underground Grand Canyon."