Qasr Al Hosn
Qasr Al Hosn is the oldest standing building in Abu Dhabi city — a watchtower built around 1761 to guard the island's first freshwater well, expanded into the seat of the Al Nahyan ruling family, and reopened in 2018 as a museum after an 11-year restoration. The complex covers the inner fort, the white outer palace, the Cultural Foundation, and the working House of Artisans.