Hyderabad city is the capital city of the Indian state of Telangana. The city has an estimated population of around 8 million, making it 4th largest city in India , while the population of the metropolitan area was estimated above 9 million. Religiously and culturally, the city is united with Hindus, Muslims and Christians. Hyderabad city is known for its rich history, food and its multi-lingual culture, both geographically and culturally. Founded in the year 1591 by fifth Qutb Shahi Ruler Muhammad Quli Qutb Shah. The original city of Hyderabad was founded on the banks of river Musi. Now known as the historic old city, home to the Charminar, Falaknuma Palace, Chowmallah Palace and Makkah Masjid, it lies on the southern bank of the river. Hyderabad and Secunderabad are twin cities, separated by the Husain Sagar (bound by the 'Tank Bund'), a man made lake made during the time of Ibrahim Qutb Shah in 1562.