The capital of Oman, Muscat, is a port city with the majestic Hajar Mountains at its back. Nearby you can find the world's largest uninterrupted desert with endless dunes, perfect for a four-wheel drive tour. You can take a boat tour in the gulf of Oman and see the cavorting dolphins, known for their acrobatics. Back onshore, the Sultan Qaboos Grand Mosque features a spectacular 50-meter high gold dome and four minarets.