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

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

This half-finished "city of toys" was almost Italy's own Las Vegas.

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

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

Medieval torture techniques with a modern conscience.

A modern sliver of architecture in Roma.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

This museum is rotten with a century of wax medical deformities.

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

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

Secret refuge and museum of the Duke of Florence.

Walk through a fairytale in Tuscany.

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

One of the largest caves in the world open to the public.

The astonishing collection of an infamous criminologist.

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

This abandoned Brutalist treehouse is a hidden architectural relic.

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

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

Dramatic sea stacks adorn the coast of this small village on the Adriatic coast.

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

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

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.