A historic structure that once housed pigeons used by farmers to help fertilize farmland.

Wandering this ancient burial place offers a glimpse of the afterlife in the fresco-adorned tombs of an ancient Etruscan civilization.

These oldest of these "embroidered stones" were carved 4,000 years ago in a high mountain valley.

One of the most exquisite Lycian hilltop citadels in Turkey.

This 19th-century pub features stained-glass windows celebrating Victorian-era "champions."

This uniquely designed bridge served as the city gate for Comacchio.

This magnificent white pagoda was constructed to resemble a sacred Buddhist mountain.

Destroyed numerous times, this centuries-old bridge has always been rebuilt with its original design.

Enormous sandstone towers loom within a Czech forest.

Two ancient Buddhist temples crown this dramatic rocky pinnacle.

Surrounded by a smudge of dark earth, this isolated volcano sits in stark contrast to the surrounding Sahara.

Three small rooms in the jungle house the most elaborate and intact murals of the Mayan world.

This 8th-century Bavarian monastery is home to an exquisite Baroque-era library.

Bioluminescence in the reefs of the Maldives causes the sea to glow like a starry night sky.

This 17th-century structure is a beautiful testimony to traditional Persian architecture

This unique temple complex remains off the typical tourist trail.

This centuries-old wooden wonder was built in less than a year and is one of Europe's largest timber-framed churches.

The fifth-longest natural arch in the world, and the longest outside China.

Sitting atop a rock on Michamvi Pingwe beach, this restaurant becomes its own island at high tide.

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

The oldest of the three remaining bridges in England with buildings on top of them.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

The remains of three different ancient civilizations have been found at this rich archaeological site.

This splendid mosaic embodies ancient Rome's fascination with the exotic allure of Egypt.