Hyderabad is the capital of southern India's Telangana state. A major center for the technology industry, it's home to many upscale restaurants and shops. Its historic sites include Golconda Fort, a former diamond-trading center that was once the Qutb Shahi dynastic capital. The Charminar, a 16th-century mosque whose 4 arches support towering minarets, is an old city landmark near the long-standing Laad Bazaar. The Faluknama Palace and the Golcanda Fort also capture the essence of Hyderabad's architecture. Heritage buildings constructed during the Qutb Shahi and Nizam eras showcase Indo-Islamic architecture influenced by Medieval, Mughal and European styles. The Metro was recently established in Hyderabad and was inaugurated by the Prime Minister of India.