An ancient capital city that dates back 3,000 years old and harbors many surprises.

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

A narrow opening between the mountains of the Amalfi Coast creates a scenic hidden beach.

The rocks around this mountain are filled with so many carvings that the area became known as the "open library."

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

Lions carved into the rockface adorn these two tombs built into the mountains of Dadan.

A 19th-century fortress and collection of artifacts offer a tour of Saudi history.

Within the Saudi Arabian desert lies a 2,000-year-old ghost town made of stone and mud.

An unfinished tomb carved into a giant boulder in the Arabian Desert.

More than 100 monumental tombs carved into rock are preserved at this ancient Nabataean site in the Arabian Desert.