2 entries match your criteria. Related Historical Markers By Howard C. Ohlhous, October 27, 2013 An Astonishing Sight Marker SHOWN IN SOURCE-SPECIFIED ORDER1► New York (Steuben County), Hammondsport — 1908 An Astonishing Sight — The Glenn H. Curtiss Heritage Trail — Near Pleasant Valley Road. 2► New York (Steuben County), Hammondsport — 1911 - 1916 Wings Over the Water — The Glenn H. Curtiss Heritage Trail — On New York State Route 54 0.5 miles east of Main Street (New York State Route 54A), on the left when traveling east.