Explore the quarry where the marble was sourced for Michaelangelo's David.

This breathtaking monastery was established by Saint Benedict himself 1,500 years ago.

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

Stumbling upon this whimsical wooded garden is like stepping into an enchanted forest full of philosophical musings.

Ride a boat through this magnificent underground world, which now doubles as a theater.

The abandoned ruins of a failed resort hide on this verdant, picture-perfect island.

The top of society once luxuriated in this world-class hotel, which continues to impress, even in ruin.

This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

A factory director designed what was the world's longest suspension footbridge in 1923 so his employees could get to work safely.

A sulfuric hellscape in southern Italy.

Overlooked amid the tourist bustle of Florence, this museum is dedicated to the craft of stone inlay.

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

A domed disco abandoned since the '70s now attracts artists and explorers under its unique roof.

A massive natural rock arch gives the Tuscan mountain its own window to the sky.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

Rome's ancient Etruscan rival, now a park full of ruins.

A lover's walk between hilltop towns, decorated with graffiti love notes.

A modern sliver of architecture in Roma.

The sinister ruins of one of the worst dam failures of the 20th century lie in this astonishing alpine setting.

Crossing this suspension bridge feels like walking through the sky, a fitting tribute to the head of the Apollo program.

The Sighignola summit on the Swiss border offers views so breathtaking it's been named one of the most beautiful places in Italy.

Romans built the world's tallest artificial waterfall in 271 BC.

A sunken idol welcomes parishioners to Davy Jones' Locker.