This is a Letterbox to a very nice place
Start at the given coordinates. Go down the stairs. After about 15 meters turn on the stairs right;-)
After about 30 meters you find in a left turn a big blue sign with roof.
A = letter word value from the single letter at the top right on a dark blue background
B = letter word value from the first letter on the top left
Now you can calculate the final coordinates:
N37 05.718+A*B W8 28.521+A+B
Alternatively, you can just go all the way down the stairs and use the spoiler to look for the cache.