Europe's simulation of the Martian surface uses soil from Mount Vesuvius.

A medieval castle was used for centuries as a hemp farm.

The only visible remains of this ancient Greek underground temple is its roof protruding from the earth.

Only the facade of this house was built so a father could fool his son.

A collection of wonderfully preserved 19th-century creatures, as well as hunting trophies seized during a police raid.

This garden among the Florentine hills is complete with a meditation path and works of poetry.

The tomb of the mythological founder of Padua is not hidden in some obscure crypt, but stands right in the middle of the city square.

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

The ruins of this medieval castle overlook the lake of Piediluco in what was once a sacred forest.

A schoolhouse and chapel are all that remains of this alpine village.

A macabre anatomy museum tucked within an old Italian hospital.

This old medieval prison tower has been a site of astronomical research for more than 250 years.

This 21st century cabinet of curiosities includes dinosaur bones, moon rocks, film memorabilia, and more.

The titular "little arch" near this Italian resort is one of the most popular diving spots in the country.

This poignant art installation raises awareness of violence against women.

Centuries ago, red and white wine poured from the statue's breasts whenever a new Venetian ruler was elected.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

A unique form of erosion created an uncanny landscape of boulders perched atop slender columns of clay.

The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.

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

Charles Dickens was not a fan of the ghastly wall dressings in this 6th century church.

Machismo turned on its head: the lady's hand goes to the dude with the bigger brain.

A huge enchanting public park just outside the ancient walls of Rome.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.