Guess this building never goes as well as guess this unit. Far more people seem to study or at least memorize unit details over building ones.
I played guess this building on a 3d site. I used a much more famous building. One mentioned and/or featured in dozen of recent movies. And no
one guessed it, not even when I clues. There were 100's of views.
I played guess guess this unit here once or twice, and every time it was guessed within 30minutes.