Photos: Wahiba Sands by Arian Zwegers (CC BY 2.0); Jebel Akhdar by Robert Haandrikman (CC BY 2.0); Wahiba desert camp by prasad.om (CC BY 2.0); Sultan Qaboos Grand Mosque by travelourplanet.com (CC BY 2.0); Wadi Shab by kewl (CC BY 2.0); all other photos public domain (CC0). Sample listings and names are illustrative.