From page 302 of Revelation Climax (1988 hard cover)
Lets zoom up for a better look
The building on the lower right is the UN building and there appears to be an air conditioning unit on top of the building on the lower left. I did not realize that the angels needed air-conditioning. Why did the bethel art dept. portray heavenly Jerusalem as a man made city that looks like New York? Maybe the GB will feel more at home there.