Rich in history, the 34 beautiful islands and peninsulas of this national recreation area feature lighthouses, military sites, hiking trails and numerous other outdoor adventures. Walk in the steps of the Union soldiers who guarded Boston from their station at Fort Warren during the Civil War. Search the horizon for ships from Boston Light on Little Brewster Island, the second-oldest working lighthouse in the nation. Observe sea creatures in sun-warmed tidal pools and cast your line for striped bass and winter flounder. All of these adventures and more are an easy ferry ride from the city.