Oman, a nation on the Arabian Peninsula, has terrain encompassing desert, riverbed oases 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, and the old waterfront Muttrah quarter, with a labyrinthine souk and busy fish market. Oman has one of the most diverse environments in the Middle East with various tourist attractions and is particularly well known for Cultural tourism. The capital of Oman was named the Second Best City to visit in the world in 2012 by the travel guide publisher Lonely Planet. Muscat also was chosen as the Capital of Arab Tourism.