From the website of St Louis Missouri Lodge No. 1. Sounds like a terrific idea:
See details here.
The Brethren of Saint Louis Missouri Lodge #1 invite you to join them on June 11, 2011, in their journey of discovery to find "The Lost Symbols of Saint Louis", a digital scavenger hunt through the events and places linked to Freemasonry in Saint Louis. You will have the opportunity to explore Saint Louis to find the names of places and streets whose meanings have been all but lost; the wonder of buildings and Temples that have been raised by Brothers and for Brothers; and the remembrance of those at rest in the cemeteries and mausoleums.
See details here.