Visiting Khasab Castle is one of the best ways for tourists to get a glimpse into what the Sultanate of Oman was like before it became cosmopolitan. Built in the 17th century by the Portuguese, this castle now houses one of the best museums in Oman. Visitors get a great glimpse into how Omanis lived in the 17th century, and the main attraction of the fort is the actual boats from ancient Musandam that are displayed inside.