Five candy-colored villages on the Italian Riviera.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

This Italian foot path winds through the mountains via 52 individual tunnels.

The home of a neoclassical master is now a shrine to his chosen art style.

This artistic temple brings together multiple architecture styles, but is only an example of one.

Destroyed numerous times, this centuries-old bridge has always been rebuilt with its original design.

Architectureal fantasy quarter of Rome.

You'll find rocket launchers, not rollercoasters, at Russia's “military Disneyland.”

A monument to the center of the North American continent may be off by a few miles.

Water and windows define this defensive Italian well.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

Europe's only Temple of Mithras located in a natural cave.

A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

The hilltop ruins of a border fortification in the Italian Alps that was much fought over.

This centuries-old hotel hides a network of secret cellars and passages once used by smugglers.

Hans Christian Andersen for the postmodern world.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

After funding was cut for a memorial to the Danish author, the sculptor had his statue ceremonially lowered into the city harbor.

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

A complex, nine-layer maze on the grounds of a Venetian doge's playground.

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

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

A visionary Italian architect created an impressive cluster of concrete structures for a family's private tomb.