Muscat, Oman’s port capital, sits on the Gulf of Oman surrounded by mountains and deserts. With history dating back to antiquity, it mixes high-rises and upscale shopping malls with clifftop landmarks such as the 16th-century Portuguese forts, Al Jalali and Mirani, looming over Muscat Harbor. Its modern, marble-clad Sultan Qaboos Grand Mosque, with 50m dome and prodigious Persian carpet, can accommodate 20, 000 people.