The Conservatory Water in Central Park (just north of East 72nd near Fifth Avenue) is a boat pond that has hosted model boating for 135 years. The boats are remote-controlled but they are environmentally friendly because they rely on wind power rather than fuel. You can rent a boat at the boat house and an instructor will give you a quick tutorial on sailing it. The remote control actually operates the sail and the rudder, but it is fairly simple to do. It is a fun activity on a summer’s day, but it is equally enjoyable to sit on a park bench and admire the beauty and tranquility of the pond, while others do the work. Check out the website www.sailthepark.com for hours of operation and pricing.