The Cybernetic Fountains are a choreographed water, light, and music show on Salou's seafront promenade. The display uses hundreds of jets and is most atmospheric after dark, when the promenade fills with families and evening walkers.
It is a simple resort attraction rather than a major monument, but it is worth timing a walk for if you are staying in Salou. Shows are seasonal, usually running from spring into autumn, so check local schedules before planning around it.