The Historic Beth Joseph Tupper Lake Synagogue and Gallery is a historic synagogue located in Tupper Lake, Franklin County, New York. It was built in 1906, and is a 2 ⁄2-story, three-bay by five-bay, vernacular Italianate style frame building. It is sheathed in clapboard and has a false front that hides a steep gable roof. The front facade features a "sun dial" arch and rose window, round arched windows, and square corner towers. Also on the property is a contributing 2 1⁄2-story, hip-roofed frame dwelling built between 1906 and 1910.[2]:2, 4–5 The synagogue was closed for over three decades.[1] Today, it is the oldest synagogue in the Adirondack Mountains, but it is only open in the summer. It houses a small museum.