In late 60s, Rudolph de Harak designed and the sculptor William Tarr built a 1:1 scale Sopwith plane complete with its runway on top of a building to tease the neighboring buildings' inhabitants.
The title of the post "Who knew?" reminds me of Turk 182
Just type 40Â°42'16.23"N, 74Â° 0'29.85"W in Google Earth and you'll see it ;)
But, here's a link to the location in googlemaps