Bidar is a city in the Indian state of Karnataka. Located on the Deccan Plateau in the north-eastern part of Karnataka. It is the headquarters of the Bidar District which shares its border with Maharashtra . It is the northernmost city of Karnataka. It is also called as crown of Karnataka. It is a rapidly urbanizing city, and the administrative center of the Bidar district. The walls and bastions of the fortified city are surrounded by a triple moat, and the fort itself is enclosed by seven large gateways. Although its origins can be traced back to the Rashtrakuta Empire (753–983 A.D.), it became historically significant when Bahamani sultan Ahmad Shah relocated the capital of his kingdom to Bidar in 1422, and used the prevailing Persian style to construct the palace and design the urban morphology of Bidar. The “karez” water system, a complex system of aqueducts used for agricultural irrigation, can also be attributed to Persian influence. Bidar city is known for its Bidri handicraft products, and its rich history. Manjira River is one of the main rivers supplying drinking water to Bidar .