Famous for the fortifications, cobblestone streets and colorful Spanish Colonial buildings of Old San Juan, founded in 1519, Puerto Rico is also becoming a favorite for something brand-new, and it’s as vibrant and infused with local heritage as the historic district. Distrito T-Mobile, a five-acre entertainment complex that was being unveiled in phases right across from the Puerto Rico Convention Center, is now fully open, taking the experience for residents, visitors and event attendees to new heights.