On two previous occasions someone has commented that my windows remind them of Ancient Gallifreyan- the written language of the Time Lords.
I learned that the homeowner's daughter is a big Dr. Who fan (as are all The Gordon's)- and after some investigation I came across an (unofficial) Gallifreyan translator.
This (with a bit of embellishment) is the symbol for "Home".
(it's much bigger on the inside).
...and at a certain time of day, when the light comes through the window just right-
a friendly visitor appears. (I wish I could plan this).
Click on Photo to Enlarge