This is an official New York State park on Pollepel Island. Originally the island was used to store munitions that were sold by Francis Bannerman. Started construction in 1901 and stopped in 1918. In 1920 an explosion damaged the building. Tours are from Early May to Late October You can read more
Abandoned Moonshine Town Park at gps coordinates given 36.05405 -82.386283 follow trail up mountain take a left at the top downhill until a stone wall appears. Not well blazed or marked.