The twin cities of Kalyan and Dombivli were joined and converted into the Kalyan-Dombivli municipal corporation in 1982 to improve the administration of the twin townships. The headquarter of this city is situated in Kalyan. Kalyan and Dombivli are both cities in the Thane District of Konkan division in Maharashtra state. The city comprises a majority of Hindu residents who speak mostly in Marathi. The weather in this city follows the exact trends as that of Mumbai and is known to experience the notorious Mumbai rains. The twin city of Kalyan-Dombivli had been under the reigns of the Mughal, the Portuguese as well as the British. The celebrated Maratha heroes, held in high esteem by the residents, were the only valiant defense against these foreign invasions. The city of Kalyan used to be surrounded by a fort wall which was constructed during the Mughal age and further improved by the Maratha rulers. It was called the Durgadi Fort. History claims that a small wooden temple dedicated to Durgadevi was behind the mosque inside this fort wall. However, this historical relic was dismantled by the British and the stones were used to build the piers of Thane and Kalyan. The idol in the temple was also stolen. Only the remnants of the north-west gate of this fort still remain to remind the people of the historic past.
The Kumbakonam Bank Limited, the previous name of City Union Bank, was registered as a limited company on 31 October 1904. In the Thanjavur district of Tamil Nadu, the bank initially preferred the role of a regional bank. The City Union Bank had a network of 600+ computerized branches (using TCS BaNCS software) as of November 2017 and 1,526+ ATMs across the country. The City Union Bank also offers a range of technical services such as self-service kiosks, bulk note acceptors, net banking, mobile banking, and Point of Sales, etc. The banks also provide savings and deposit products to meet the demand of various customers. It also offers many loan products to serve the financial needs of small individual customers to large industries. City Union Bank launched Indias first banking robot named Lakshmi in November 2016. It is the first on-site humanoid robot in India. The robot is capable of managing multiple tasks on sensitive financial information like account details. Dr. N Kamakodi is the MD and CEO of City Union Bank since 2011. The digital banking products and services of City Union Bank includes Passbook printing kiosk, Credit card and traveling card facility, cheque clearing kiosk, etc.