Philadelphia artist's mural to celebrate papal visit is a community affair

Cesar Viveros, Mexican muralist based in Philadelphia, stands alongside a rendition of the mural he's been commissioned to paint as a welcome to Pope Francis. (Photo: Milady Nazir/Fox News Latino)

College volunteers learn the art of cutting glass but also arrange mosaics. For Viveros mosaics teaches patience and is also a great form of art therapy. (Photo: Milady Nazir/Fox News Latino)

Cesar Viveros was a pioneer incorporating 3-D elements to his murals. The papal mural will be adorned with mosaics that will form stars as the firmament in this latest mural. (Photo: Milady Nazir/Fox News Latino)

Painters use small brushes to color in sections of the panels with a paint-by-number system. (Photo: Milady Nazir/Fox News Latino)

Viveros uses a paint-by-number system in order to make it easy for volunteers to be part of the process. Viveros' papal mural has used more than 1,400 volunteers already. (Photo: Milady Nazir/Fox News Latino)

Volunteers from all over the city and even tourists participate. Viveros gives instruction to a participant who came to Philadelphia for a leadership training program. (Photo: Milady Nazir/Fox News Latino)

Painters use small brushes to color in sections of the panels with a paint-by-number system. (Photo: Milady Nazir/Fox News Latino)