My brother has just returned from a week trip to London. A co-traveler, who wasn’t very religious, pointed out the Masonic symbol (square, compass, and All-Seeing Eye) painted on the ceiling of the cathedral. There are numerous other strange symbols in the cathedral, arguably Masonic or pagan (solar deity symbol in the center of the floor), but the All-Seeing Eye is the most typical of all Masonic symbols. The architect of the rebuilt cathedral (Old Saint Paul’s — which, of course had been Catholic before the Reformation — was destroyed in the Great London Fire of 1666), Sir Christopher Wren, (1632-1723) was well-known to be a devoted Mason. He designed 52 churches in London after the fire.
Here is a picture of the occult symbol.