If you need to take a break from all that sightseeing, unwind in the sun at Lake Whatcom. Bring a picnic or a book ... This is the place to switch to relax mode!
When you've spent a bit of time at this body of water in Washington, why not make your way to Western Washington University, Mount Baker Theatre, and Lake Padden Park? They're close to Lake Whatcom and also a favorite with many tourists.