Outdoor Activities: With five rental locations you can easily rent a canoe or kayak and set out on the Charles River for the day. Lessons are available for those looking to learn the ins and outs of canoeing or kayaking, but for those just looking for a little recreation on the river, rentals will do just fine. Set out from the banks of the Charles and make your way in either direction to take in the view of Boston and Cambridge from this famous waterway. A leisurely way to spend the day while getting a bit of exercise, Charles River Canoe an Kayak offers group tours and even takes you off the Charles. Rentals and tours on Boston Harbor are are also available. Families are encourages to enjoy with children, and those aged 8 and up can even operate their own kayak.