The 3 Sisters Falls San Diego was one hike that I had been wanting to do for quite some time. We finally had a free Saturday to put this hike into motion, but my husband was dealing with a back injury, and I was a bit worried about doing this hike with just my kids. Luckily, a friend and her boys were down to join us, so off we went. A parking permit is not required for the 3 Sisters Falls hike There are a couple of things you should know before you take off. First, there is a lot of mixed information about whether or not you need an…