The building was sited on a disused quarry, which now makes up the amphitheatre. The matching statues on top of the domed towers are Atlas, holding up the world, sculpted by Abraham Broadbent. The statue on the domed rostrum in the amphitheatre between the wings is Mercury, a mythic Roman messenger and a god of trade, sculpted by George Ness. The closest suburb to the Union Buildings is Arcadia, which means "Playground of Gods". Pretoria has the second largest number of embassies in the world, after Washington, D.C., most of which are located in or near Arcadia.