The world / Saudi Arabia
Saudi Arabia
Capital: Riyadh
- The 2026 census counted 35,325,004 people, about 16 per square kilometre across the country.
- Hegra, near Al-Ula, was added to UNESCO's list in 2008. Its Nabataean tombs were made more than 2,000 years ago.
- Al-Ahsa Oasis is described as the world's largest oasis, covering about 85 square kilometres. UNESCO listed it in 2018.
- The Rub' al Khali covers about 650,000 square kilometres. Its dunes can rise to 250 metres, and it spans Saudi Arabia, Oman, the UAE and Yemen.