Diu Fort is a Portuguese-built architecture located on the west coast of India. The fort was built in the 16th century as part of the Portuguese defensive fortifications east of Diu Island. This fort on the outskirts of the city of Diu was excavated by the Mughal Emperor Humayun in 1535 after a defensive attempt by the Bahadur of Gujarat and the Shah of the Portuguese. It was strengthened for several years until 1546. The Portuguese ruled the region from 1537 until the Indian invasion of December 1961. Today it is a landmark of Diu and one of the Seven Portuguese Wonders of the World. Sultan Shah Bahadur of Gujarat captured Diu Island in 1330 AD. Some defense forts were built during his reign and during the previous Muslim rulers, but the Portuguese demolished them while building new forts.