Rexenera Fest Activity · Carballo, Bergantiños, A Coruña Image of Carballo, not of the place itself. An international public art festival born in 2014 which each year invites muralists from different countries to work on abandoned walls and party walls in the town, turning the town centre into an open-air gallery. Photo: amaianos from Galicia (CC BY 2.0) What to see and do in Carballo