Governors Island is a 172-acre park just 800 yards from Manhattan. It was a military base for 200 years and only opened to the public in 2004. Today it draws 500,000 visitors a season. This insightful guidebook is for any visitor to the island: a bicyclist who just wants to enjoy five miles of car-free biking, the Civil War enthusiast that wants to visit Castle Williams and see where 1,000 Confederate soldiers were imprisoned, or families on a picnic...