U.S. muralist Paul Santoreli was in Nicaragua earlier this month to work with a group of at-risk youth to paint street art in Managua, El Viejo, León and Bluefields.

The Philadelphia native says he has 25 years working with youth in to pain murals in communities, which help marginalized neighborhoods to create artwork and a new identity for themselves.

Check out some of their work in this time-lapse video