Austin wouldn’t be Austin without this huge, 355-acre park. Home to the spring Kite Festival for the last 82 years, fall’s Austin City Limits Music Festival and the 155-foot Zilker “Tree”—a tree made of wires that’s lit up every holiday season (don't be surprised if you see kids and adults, alike, spinning around under the tree, in fact, you should try it—when you twirl it creates the effect of a psychedelic light show). The park winds around Lady Bird Lake with miles of biking and walking trails, soccer fields, disc golf and city views. The Zilker Train is great for kids and goes around the park so you can get the lay of the land (bring money—the trip costs $2.75 for adults and $1.75 for kids under 12; infants under 1 ride free). Don’t miss Barton Springs. The city’s undisputed gem is fed by underground springs and is 68 degrees year-round. If you get there before 9AM, it’s free. Or, you can always go in the back way [no pets allowed] and sit in the springs there. You’ll find a lot of runners there after Saturday morning long runs, soaking tired muscles. Don’t like the cold? Jump in anyway; the springs have long been thought to have healing powers. Get easy access to the Barton Creek Greenbelt from here, too—and discover 8 miles of hiking, climbing and swimming holes.