A scenic 5-acre waterfront park in Charlestown, Paul Revere Park offers one of the best playground views in the city - right beneath the Zakim Bridge. The fenced playground includes areas for ages 2-5 and 5-12, with climbing structures, slides, and fun interactive musical play elements. Bonus: There's also a large oval lawn that is also dog-friendly and a great spot for little train lovers to watch (and listen to!) commuter trains roll by.