This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

The glowing blue Nymphaeum of Emperor Tiberius.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

The final resting place of the poets Shelley and Keats.

Geothermal waterfalls in Tuscany.

Thousands of well-dressed mummies below a monastery.

2300-year-old Roman road connecting the empire.

Stalactites and stalagmites in a beautifully lit cave.

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

This community on a small Venetian island has taken to painting their houses in bright neon hues.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

A submerged archeological park still holds the wonders of a Roman Sodom.

The 20th-century archaeologist was interred among the ruins of an ancient Roman city.

This ancient stone necropolis is in danger of disappearing.

This ancient town is full of stunning Ottoman architecture and streets so narrow trash collection is done by donkey.

This restored eighth-century palace is a shining example of ancient Umayyad architecture.

Just outside of Jordan's capital lies an ancient castle and intriguing caves dating back to the Copper Age.

One man's labor of love, Amman's oldest home has become a time capsule with its doors permanently open to artists and guests.

A bathhouse from the second Islamic Caliphate decorated with frescoes of constellations, pleasure gardens, and naked ladies.

This exceptionally well-preserved ancient marvel also houses a small museum dedicated to Jordanian folk tradition.

Concentrated around the Dead Sea, these surprising canyons are filled with coursing water, fish, and even crabs.

The world's oldest map of the holy land gives us a fragmented glimpse of the layout of biblical nations.