Al Rahmah Mosque appears to "float" atop the Red Sea.

For centuries, Jeddah’s old town was a major trading port and a point of entry for Hajj pilgrims traveling by sea.

A 900-year-old village located in the highland of the Asir region that features historic architecture.

This giant volcanic crater holds its very own field of salt.

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

Once a major stop on the Hejaz Railway, this desert station (complete with steam locomotive) has been abandoned for decades.

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

An archaeological site believed to be the burial place of the "mother of us all."

Village of slate houses, built on a white marble outcrop.

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

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

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

Op-art architecture designed for happiness.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

If you dare visit this fort, fire-breathing hyenas might devour your camels.