View of the rear Entrance of the Czech National Bank headquarters in Prague. The Czech National Bank, (Czech: Česká česká narodni, NáRODNí) banka čnb is the central bank and financial market supervisor In The czech republic with its Headquarters. in praguehe first independent banking system, in what is now the Czech Republic, was The Banking Office of the Ministry of Finance. The bank was established in 1919, due to the development of a new state.