Photographer Justin Hamel stumbled on a Great Depression-era mural one day in a New York post office, and was intrigued to learn there are 1,200 of them across the country.

Murals are made of an innovative material with canvas structure so the application is extremely easy and the adhesive does not lose its properties in time. The murals do not wither on the walls, so they do not cause damage to the surface and do not leave sticky marks.