Lake Superior Circle Route
- Travel guide for hiking, camping, canoe tripping, waterfall discovery and exploring Lake Superior's shores in Minnesota's North Shore, Ontario, the Upper Peninsula of Michigan, and Wisconsin.
- http://www.superiortrails.com/

Great Lakes Circle Tour
- Travel guide to highway tours on scenic road system connecting all of the Great Lakes and the St. Lawrence River and encircling each of the lakes, usually on the closest major road or highway to the water.
- http://www.great-lakes.net/tourism/circletour/

Great Lakes Cruise Company
- Cruise line with five ships sailing the Great Lakes. Includes company profile, itineraries, prices, photo gallery, descriptions of ports of call, and reviews and testimonials.
- http://www.greatlakescruising.com/