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

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

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

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

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

A sulfuric hellscape in southern Italy.

These delicate sand pyramids look like naturally occurring gothic spires.

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

Art and armour fill every inch of this rich kid's Italian villa.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

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

Anatomical cabinet holds unexpected treasures.

The bomb-ravaged remains of of a colossal Neptune.

An incredible menagerie of more than 3 million taxidermied animals at the oldest science museum in Europe.

An abandoned Roman salami factory has found new life as an art space home to 200 squatters.

Erotic art covers the walls of the largest ancient pleasure palace.

This abandoned Brutalist treehouse is a hidden architectural relic.

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

This winding road through an Italian canyon may be the most scenic drive in the world.

Gigantic mosaic sculptures of the figures on Tarot cards fill this colorful Tuscan garden.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

This Tuscan lake hides a 13th century town that is still visible when the water recedes.

An ancient artistic garden parlor full of hidden water wonders.