If you need to escape the hustle and bustle (and pollution) of the city, I highly recommend this…read morespot. We've been twice now, and it never disappoints. It's pup and kid friendly with an opportunity to hike, swim, BBQ, bike, and more.
The prices recently increased, so now a car with two people will pay $14.000 clp to enter. Definitely take sunscreen, a hat, towel, good hiking shoes, and water. They also have bathrooms. Arrive early to claim a spot for your group, but honestly, there are so many good options!
Getting here can be daunting because there isn't a paved road for much of it, or it is one lane with blind curves, but if you can brave that, it is worth it! The best days to come are weekdays since it can be totally packed on the weekend with bottlenecks at the entrance. The hiking is pretty tame and not far at all--very kid friendly.