A Listly List - Having once served as the capital of the country, Nizwa is no ordinary tourist hub in Oman. Nizwa is home to some of Oman's most impressive heritage sites and breathtaking natural wonders, and a trip to this city would not be complete without discovering the following attractions. - Tanuf Falls, Nizwa Souq, Nizwa Fort, Jebel Akhdar, and Jabreen Castle