Author's Note: I was rereading J.P. Donleavy's "The Onion Eaters" when I came across this contest. The book's title automatically suggested my choice of building--a church in Russia converted into a hotel(?), with its onion-shaped domes. There are 15 onions in this image so you have to look at the picture in FULL VIEW. Send me a message if you can't locate the small ones.
It was fun doing the picture and I hope you'll have fun too locating them not-too-obvious onions.