San Gabriel is often overlooked compared to Santa Monica Mountains, but it is also amazingly beautiful. There are lots of beautiful trails - from the Falls Trail to Mount Wilson and the Observatory - where you can see the stunning scenery of Los Angeles. In these mountains, you can be in the nature of the body (Los Angeles National Forest). Climbing to the top, you can see the whole city, but there are many hidden paths that make you feel lost in the woods. There are some (of the many) nice places: Eton Canyon, Stuart Winter Falls, Mount Wilson.