Defy gravity by climbing and zip-lining your way through a canopy of conifers at Tahoe City Treetop Park. The attraction features 65 tree platforms, which visitors reach by way of suspension bridges, catwalks, and short zip lines, some as high as 50 feet off the ground. There are a variety of courses for kids and adults, and no experience is necessary. Guests simply pay a flat fee for 2.5-hour sessions, the first 30 minutes of which are spent getting outfitted in a helmet and harness and learning the ropes. Younger kids then head for the Flying Squirrel courses, which include three graduated levels, while older children and adults attempt the Monkey courses, which feature five grades. Especially fit beginners can knock out all the levels in one day but it’s certainly a workout.