This is a very young and small town, it's about 10 years old only!
You can visit San José del Rosal's Church, built in a colonial style. There is also a monastery where you can actually stay. This monastery also organizes like "spiritual get togethers", I wouldn't know what to call them, but in any case, the objective is to be in a peaceful area.
There is also a waterfall that comes from El Cajón Lake.