Buildings that house establishments for the custody of money received from, or on behalf of, customers, with the essential duty of payment of the orders given on it by the customers. Banks' profits arise mainly from the investment of the money left unused by the customers. Bank buildings typically have indoor counters and windows where customers may make transactions, often with bars or other security devices securing the window, offices where bank officials may meet with customers, vaults for the secure storage of money and other valuables, and other security devices and measures. Exterior bank architecture traditionally imitates a Greek temple, although many other styles are employed as well.

Source: Art and Architecture Thesaurus

http://vocab.getty.edu/page/aat/300005214