Our friends at CaliParks.org shared their heat map of the most "socially connected" parks in California--those that are tagged most frequently on Instagram, Twitter, Flickr, and FourSquare. Use the arrows to scroll through the current top 10. You can also zoom in on the maps to see the most popular spots for photo ops and check-ins at each park. (Spoiler alert: they're usually along ridgelines and at designated vista points.) And, down below, take a peek at the most recent photos tagged at each park.