The newly renovated Cedar Haven Cabin in Thompson's Harbor State Park offers beds for six, a gas stove, and access to 7.5 miles of Lake Huron coast and more than 5,000 acres of rugged forest. Hike six miles of wooded trails, then ramble along the rocky shoreline with an eye peeled for bald eagles. The next day, go scuba diving among the shipwrecked schooners of nearby Thunder Bay National Marine Sanctuary with Great Lakes Divers and Sweetwater Charters.
NEAREST AIRPORT: Traverse City, three hours.
EXPENSE REPORT: Two nights at the Cedar Haven Cabin (michigan.gov/thompsonsharbor; book a month in advance): $130 for up to six. Out-of-state parking permit (michigan.gov/dnr): $29. Camp provisions: $60. Two-tank scuba dive (greatlakesdivers.com; four-person minimum): $255. Total: $474