If you like live theater, book yourself some seats for a play or other stage show at National Theater. Check online for times and prices.
It won't take you long to figure out why this arts and culture attraction is a hit with visitors to San Salvador. Pay the entry fee and then take your time to explore it. When you're ready for more fun sightseeing adventures, Estadio Cuscatlan, Monumento al Salvador del Mundo and La Gran Via Shopping Center aren't far from National Theater.