Stop by, and you'll receive a map to two well-preserved ancient petroglyph sites.

Tools, pottery, and mummies showcase the history of La Palma's native people.

This cave was the former seat of power for two brothers who ruled together as kings.

On La Gomera, "Silbadors" communicate in a 4,000-word language of whistles.

A space-grade telescope mirror lies discarded in the shrubs.

A large collection of solar and night-time telescopes dot a small area on the Teide mountain range.

Lava stone structures possibly dating back to the 19th century may have been a stopping point for voyagers between ancient Egypt and the Mayan Civilization.

In this medieval church, a centuries-old stuffed crocodile hangs from the ceiling.

Known as the Royal Palace of the Euganean Hills, this often overlooked castle has been home for multiple noble families over the centuries.

A sudden, striking cluster of hills south of Padua has been attracting visitors for centuries.

Two planes stand abandoned after the closure of an aircraft-themed restaurant.

Renaissance villa and gardens complete with a tormented colossus.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

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

A forgotten "city of water" underneath the famous Trevi district.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This ancient market is often referred to as the oldest shopping mall in the world.

This is the oldest Roman-made bridge in the city still existing in its original state.

This small, ancient Roman temple was once a church dedicated to the patron saint of penitents.

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

This curious, round temple is the oldest still-standing marble building in Rome.

An oasis of beauty, tranquility and botanical research in the middle of Rome.