Vermont, the Green Mountain State, invites tourists to find adventures in all four seasons from maple sugaring in the spring and outdoor concerts in the summer to fall color tours in the crisp mountain air and skiing in the winter. Burlington on Lake Champlain is cosmopolitan with its outdoor-sidewalk cafes, and nautical history and museums. Visitors view Burlington, with the University of Vermont, as a destination on historic American Revolution tours or as a gateway to Vermont's countryside, the Adirondack Mountains in New York, and Montreal. Nature lovers flock to Vermont to visit its farms, orchards, forests, hills, and mountains. The Green Mountains provide a perfect venue for outdoor adventures like hiking, cross-country and alpine skiing, snowboarding, snowshoeing, kayaking, canoeing, camping, fishing, and hunting. Killington, Stowe, and Mad River Glen are wonderful vacation destinations for taking advantage of all Vermont's outdoor adventures. Walkers along the Appalachian Trail find the hike through the Green Mountain National Forest challenging and the views spectacular. Small villages, with unusual arts, crafts shops and antique stores. Burlington has a regional airport; however, following I-91 north from Massachusetts along the Connecticut River provides a scenic route through Vermont.