Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This semi-secret storybook hedge maze is also the oldest garden in the city.

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

Visit a secretive crypt before it crumbles to dust.

The crumbling remains of a 19th-century textile factory.

This Roman theater was crafted into the local tuff rock and was rediscovered during the 19th-century.

Beautifully decorated tarot cards from the Middle Ages.

Two of the few remaining life-sized Greek bronzes were submerged in the sea for over 2,000 years.

Statues portraying anatomical deformities were placed in this garden to foster ethical behavior.

An abandoned building that once tightened a power line that stretched across Messina Strait.

A perfectly preserved example of a fortified Medieval ricetto.

This lake was sacred to the Sabine people who constructed a temple here on a floating island.

A fairy-tale-like forest that was sacred to Jupiter and Saint Anthony.

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

The ruins of this medieval tower are destined to crumble into the sea.

This crystal clear water basin feeds the Lao river and powers a hydroelectric power plant.

A cone-shaped top and cylindrical body set this 900-year-old structure apart from other Italian bell towers.

This deceiving white sand beach gets its brilliant hue from the chemical discharge of a nearby factory.

Packed with geological formations, an ancient river, and taxidermied seals, this overlooked coastal cave system is worth a spelunk.

Turtles swim in a pond surrounding a classical temple in this lush park in Vicenza.

These pillars at the main entrance of this church are actually a hidden musical instrument.

In this museum, visitors are invited to touch the art.

In this nearly 1,000-year-old monastery, monks painstakingly restore old books.

This uniquely designed bridge served as the city gate for Comacchio.