Glimmerglass State Park is a 593-acre state park located north of Cooperstown, in Otsego County, New York. Most of the park is located inside the Town of Springfield. Glimmerglass State Park is located at Hyde Bay on the east shore of Otsego Lake, which is the "Glimmerglass" lake of James Fenimore Cooper's Leatherstocking Tales. The Hyde Hall ma…Glimmerglass State Park is a 593-acre state park located north of Cooperstown, in Otsego County, New York. Most of the park is located inside the Town of Springfield. Glimmerglass State Park is located at Hyde Bay on the east shore of Otsego Lake, which is the "Glimmerglass" lake of James Fenimore Cooper's Leatherstocking Tales. The Hyde Hall mansion overlooks the bay and most of the grounds.