The Gallery of Maps (Italian: Galleria delle carte geografiche) is a gallery located on the west side of the Belvedere Courtyard in the Vatican containing a series of painted topographical maps of Italy based on drawings by friar and geographer Ignazio Danti.
The gallery was commissioned in 1580 by Pope Gregory XIII as part of other artistic works commissioned by the Pope to decorate the Vatican. It took Danti three years (1580–1583) to complete the 40 panels of the 120 m long gallery.(Wikipedia)
"The Gallery of Maps"