
With Dan Brown's The Lost Symbol being set in Washington DC and involving the Freemasons, undoubtedly we're in for more of the same, tired accusations about Masonic symbols in the streets of the capitol being Satanic or otherwise occult talismans of eeeeevil.
Here it is from overhead.

A Pyramid. A Star of David (or Sign of Solomon, or Zionist flag, depending on your favorite creepy, paranoid kink). And naturally, a Masonic square and compasses in the center. For what purpose, that remains unclear in the FSP material.

Whoops!
There's another one of those Satanic pentagrams again! Or is it only evil and Masonic if it is turned upside down?
While we're looking around Europe, here is the alleged "Masonic" compasses in Brussels:

The Piazza Del Popolo in Rome:

And since we're talking about Vauban, the Place Vauban, in Paris.

But if the all-powerful Masons put them there, where are the "squares" to go with the compasses? (Well, the Paris streets line up, but Rome and Brussels don't. Cue the conspiracy theramin: the left side of the "square" at the bottom leg of the compasses is Boulevard Garibaldi, named after the famed Italian revolutionary and Freemason).