Things like this happen more than you'd think.
For instance, the US Navy's "accidental" arrangement of buildings:



That's obviously an old practical joke that was kept silent for a very long time. I just wonder how many people were in on the joke.

I was told of a college whose parking was carefully laid out so that from the president's house the lights spelled out "FUCK YOU"...
(The Resident Loon drives women crazy, but not in the good way, Thu 27 Sep 2007, 15:09, archived)