Just shy of Duluth, Jay Cooke State Park is the perfect getaway when you want to trade pavement for nature. The park's famed suspension bridge is back up and swinging again after a massive flood knocked it out. Once again you can walk to the middle of the bridge and gaze at the beauty of the St. Louis River, or you can jump around and freak out all the gephyrophobics clinging to the railing. On both ends of the bridge (and across the highway by the park's spacious campgrounds), you'll find 50 miles' worth of primo day-trip hiking throughout the pine-riddled forest and along the slate-filled riverbed. The park is even open during the winter for cross-country skiiers, snowshoers, and frozen-waterfall lovers. Jay Cooke State Park turns 100 years old this spring, so celebrate by lacing up your hiking boots.