Oman, a nation on the Arabian Peninsula, has terrain encompassing desert, riverbed oasis and long coastlines on the Persian (Arabian) Gulf, Arabian Sea and Gulf of Oman. Wahiba Sands is a region of dunes inhabited by Bedouins. The port capital, Muscat, is home to the massive, contemporary Sultan Qaboos Grand Mosque, waterfront Muttrah quarter with a labyrinthine souk & busy fish market.