A relic of World War I that now exist as a piece of public art.

A whimsical bridge adorned with decorative dragons.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A miniature train-ride through Slovenia's largest cave system.

This unattributed sculpture in Amsterdam is hiding in plain sight.

This saucy statue once caused outrage among locals.

Five candy-colored villages on the Italian Riviera.

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

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

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

Southern Italy's spinning top village.

Breathtaking and huge 430 year old maps of Italy.

A sculpture serving as an homage to Pope John Paul II.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.

One of the largest squares in Europe contains an entire artificial island.

The oldest botanical garden in the world that technically isn't the oldest.

A 16th-century horror show built in a lovely Italian garden.

This war memorial commemorates some of the world's first paratroopers.

This fiberglass version of the Awakening sculpture by Seward Johnson, now resides in its third location in Italy, in Viterbo.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

Nestled in the hills of Tuscany are gorgeous, multicolored hot springs.

This sword isn't waiting for a king to pull it out. It was placed there by a saint.