I visited North Park Boathouse last fall with family while B was mountain biking in the area. The location is absolutely beautiful! The building is gorgeous and sets on a very picturesque lake.
The Boathouse offers kayak, rowboat, canoe, peddle boat, stand up paddle board, and bicycle rentals. This is great, especially if you're visiting the area from out of town, because they have all of the equipment you'll need to enjoy the area on hand, so you don't have to worry about bringing it all with you.
OTB (Over the Bar Bicycle Cafe) is also located at the Boathouse, so if you need to grab a bite or a drink while you're visiting you're all set.
If you're exploring North Park I think checking out the North Park Boathouse is definitely worth it! Even if you just walk around and check out the beauty of the place.