There is a very interesting church building in the Sugar Hill neighborhood of Harlem, near City College.
Childs Memorial Temple chuch, and for some reason they incorporate the Star of David in their building facade (see the top of that building, above the cross). They even have them on their doors,
elsewhere on churches in Harlem:
found a site which said that the church bought the building from "The Lido Theater" in 1952. Maybe before it was a theater it was a synagogue? I'm not sure how to look that sort of info up, but if a reader has any insight into this, I'd love to hear it!