Berlin Mountain, a 2,818-foot peak in the Taconic Mountains near Berlin, New York, is the highest point in Rensselaer County and the highest summit of the Taconic Range within New York. Straddling the New York–Massachusetts border, it is an Appalachian bald with a grassy summit crossed by the Taconic Crest Trail, and much of its upper slopes are protected conservation land. Its lower slopes preserve evidence of 19th-century farming and charcoal production for iron smelting, linking it to the region’s agricultural and industrial past. Around 1915 to 1923, the mountain also served briefly in regional forest-fire detection, and only the fire tower footings remain.