Impossible figures in advertising
Telmex is a a Mexican telecommunications company headquartered in Mexico City that provides telecommunications products and services in Mexico and other countries in Latin America.
There was created an advertising with endless staircase by ME ZA.
Artist's gallery at Behance Network http://www.behance.net/ME-ZA.
The image was found at http://www.behance.net/gallery/Telmex-Pago-de-servicios/3305048.