A few resorts or lodges offer boat tours from their marinas; Door County Fireboat Cruises (120 N. Madison Ave., 920/495-6454, www.ridethefireboat.com, $20 adults) depart from the Maritime Museum and use a retired Chicago fireboat to chug along for two-hour cruises at 10:30 a.m. and 12:30 p.m. Memorial Day–Labor Day. The 10:30 tour travels through the Sturgeon Bay Ship Canal to Lake Michigan, while the 12:30 tour travels out into Sturgeon Bay to Sherwood Point and past its lighthouse. In July and August these trips definitely leave unless the wind is howling; in May, June, September, and October call ahead.

Harbor Lady (920/707-5239, www.harborlady.com) leaves from a resort and conference center complex opposite the Holiday Music Motel. For $15 to $20 you get a sightseeing cruise or a lunch (burgers and chicken) or dinner (buffet) cruise aboard a much plusher ride!

North of town, the University of Wisconsin agricultural research station is open for public perusal. Individuals can obtain a map for a self-guided tour of the 120-acre fruit and potato research center.

Too tired to hoof it? Door County Trolley (920/868-1100, www.doorcountytrolley.com) has an array of fun tours (historical, themed, culinary, and more, $14–65) on an old-fashioned streetcar. Check their website or phone for pickup points, which vary by tour.