“This has long been the name of a rock that is part of the river-wall on the outer side of Kingsland’s point. There is a summer-house built over the rock and if there were ever golden riches beneath it, or if there are treasures hidden there still, it is not (fortunately) the duty of a sober historian to tell.” –Chronicles of Tarrytown and Sleepy Hollow, by Edgar Mayhew Bacon Kingsland Point, today a waterfront park in Sleepy Hollow, was once part of an estate owned by Ambrose Kingsland, a wealthy whale oil merchant who served one term as mayor of New York City. Kingsland also owned land nearby in Tarrytown that…