172-6 Norfolk St., Synagogue, abandoned for years, Built in 1849-1850. I remember seeing a photo of the inside not long after it was abandoned, and seeing the many wood carvings and carved altar all destroyed and laying in pieces all over the floor. It all must have been used for firewood because it was mostly gone when I went in may of 1976.
According to this web site:
http://www.nycjewishtours.org/7.html
It is now designated a New York City Landmark in 1987, and is used for theatrical events, gallery shows and special events after being bought in 1986