The Burlington waterfront used to be a busy shipping center with all the accompanying industrial detritus. Thankfully, the urban shoreline has been beautified over the years. Take a stroll along the boardwalk or the bike path, step about the Spirit of Ethan Allen for a lake cruise, have lunch at Splash! at the Boathouse or toss a frisbee on the grass. If it's raining, take refuge at the ECHO Lake Aquarium and Science Center.