Monarch_advertising_sign
The Monarch advertising sign (letrero publicitario de Monarch in Spanish)[1] is a neon billboard located on the roof of a building at 51 Rancagua Street, in the Santiago Metropolitan Region of Santiago, Chile.
The sign was initially installed in 1954,[2] and in 2010 was declared a National Monument of Chile. It is also classified as a Historical Monument.[3][4][5][6]