Complex sentence: A designated historic monument in itself, with the historic monument "Jesus Saves" sign (originally from The Church of the Open Door) on its roof, the former United Artists Theatre now houses one of the largest privately owned collection of English Bibles.
Split into simpler sentences: A designated historic monument in itself, the building is topped by the historical monument "Jesus Saves" sign (originally from the Church of the Open Door). The former United Artists theater now houses one of the largest privately owned collection of English Bibles.