The largest desert outside of the polar regions is the Sahara Desert. It spans approximately 9.2 million square kilometers across North Africa, making it a true expanse of arid land. The Sahara is known for its vast sand dunes, rocky plateaus, and extreme temperatures. Encompassing diverse ecosystems, it supports various flora and fauna adapted to its harsh conditions. The region is significant for its historical trade routes and cultural interactions among indigenous communities. Tourism also thrives here, with travelers drawn to its unique landscapes and rich cultural heritage.