Yaucromatic
Not technically in Ponce but the neighboring town, Yauco, Yaucromatic was born as a recovery effort following hurricanes Irma and María. The art movement became famous after a neighborhood in Yauco painted a large-scale mural called "Tropical Breeze" covering several streets and houses. It resembles mosaics in bright, neon colors and is complemented by other murals in town. A couple of blocks away is the town's square, where you can park (if you rented a car) and walk around to enjoy the art. The town has even developed a map of all the locations where you can find murals and businesses around it.