I figure since this got entirely missed by most of the folks here, who haven't read the whole thread, I'll post it again. I did a little graphing, and found that from the Google Coordinates (knowing the GDC, they would write this clue around what we all have, which is Google Maps/Earth) are directly on the statue of Copley. At the heading of the third number given, from the statue of copley, you are looking in a clear path through two obelisks, at the Globe Cafe. In this setup, we have the three shapes of FIRST: Triangles, Circles, and Squares.

My earlier post has an attached drawing with the satellite photo and the lines drawn to show the heading.