Get a taste of life at sea when four historic ships dock at Hudson River Park’s Pier 25. This three-day fest will give little sailors the chance to climb aboard the Pegasus, the John J. Harvey, the Lehigh Valley Railroad Barge No. 79, and the Lilac. When tots aren’t exploring the ships on free dockside tours (Fri, Sat), they can set sail for educational trips on the Hudson River (reservations have been filled, but additional free tickets will be available on a first come, first serve basis on 11:30am on June 22), try their hand at maritime know-tying, or fish off the Lilac's deck. To top it all off, the Lehigh Valley Railroad Barge No. 79 will feature a Showboat Circus with high-flying circus acts right on the boat itself ($10–$15, tickets available for purchase at nrhss.org). All ages.