Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

A seemingly endless landscape of pure salt stretches far across Bolivia.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

Medicinal spa created with the discharge from a geothermal energy plant.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

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

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

Five candy-colored villages on the Italian Riviera.

An Italian hillside ghost town.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

The glowing blue Nymphaeum of Emperor Tiberius.

2300-year-old Roman road connecting the empire.

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

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

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

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

This historic stone bridge has an entire neighborhood clinging to its sides.

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

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

The fairy tale castle of the "fairy-tale king."

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.