Places hardwire75 Wants to Go

Also known as the Temple of Poseidon, this is one of the best-preserved Greek temples in the world.

A beautifully well-preserved ancient Roman villa.

A limestone grotto where daylight filters in from below and turns the water a beautiful turquoise. Also home to a small underwater nativity scene.

For centuries, this large Roman villa remained hidden thanks to the eruption that buried nearby Pompeii and Herculaneum.

Buried next to Pompeii, this lesser-known Roman villa was the opulent vacation home of Emperor Nero's wife.

The old church, buried by the 1784 Mount Vesuvius eruption, is a remarkably well-preserved place where people now pray for the souls of the dead.

Pompeii's less famous neighbor is still revealing her secrets.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

This monumental fountain has moved around the city multiple times.

The relics of dozens of martyrs are stored in a single chapel.

An eerie, little-known Neapolitan museum filled with preserved human remains.

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

Virgil's many-mouthed gateway to the underworld.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

The underground sanctuary of a mysterious ancient Roman religious cult contains an exquisite traditional fresco.

This medieval Italian town is a sheer (and beautiful) cliffside defense.

Unscathed for almost 2,000 years, the best preserved Roman triumphal arch is in a small southern Italian city.

A mountain cave is the site of archaeological findings and Paleolithic rock art.

This crystal clear water basin feeds the Lao river and powers a hydroelectric power plant.

A cave in southern Italy adorned with thousand-year-old Biblical frescoes existed in obscurity until fairly recently.

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