This puzzle cache points out some local things that would probably be unnoticed any other time, except for looking for this cache. It's a two-stage park-and-grab with a little extra difficulty to make it not-so-easy of a regular park-and-grab. You will need to gather some information in the immediate area to determine the coordinates for the actual cache location.
You are looking for something at the posted coordinates that used to call people to worship. When you find it, SUBTRACT the two years on the plaque. Then, look directly across the street and you’ll see a Little Free Library where you can take one, leave one. Take a moment to browse a little. There's a Charter # on the outside.
To determine the WEST coordinates of GZ, ADD the rightmost three digits of the Charter # together and ADD that sum to the difference of the two years from the plaque. Then, SUBTRACT that amount from the decimal portion of the West coordinates.
To determine the NORTH coordinates of GZ, walk West to the end of the building to find a corner stone. SUBTRACT the dates on it. Then, ADD the two leftmost digits of the Charter # together and ADD that sum to the difference of the years on the corner stone. Then, ADD that result to the difference of the years on the plaque that you originally found across the street. Then, ADD that amount to the decimal portion of the North coordinates.
And, as always, be aware of any muggles around.
GZ is only a short distance away and was placed with permission. Good luck!!!
You can check your answers for this puzzle on GeoChecker.com.
FTF gets a little bonus. Congrats to Sir Dave for being FTF!!!