On Number 84 ("Pluto") is Södra Bankohuset, the oldest national bank building in the world. The western façade facing the square, built in 1675–1685 to the design of Nicodemus Tessin the Elder, is inspired by Italian Renaissance, the strict style meant to emphasise the motto of the bank: Hinc Robur et Securitas, "Hence Stability and Reliability". The portal is a direct quotation of Vignola's portal at Villa Farnese in Caprarola. The original design was repeated around the building by later architects.