I haven't figured out how to post pictures, but the pictures of the olympic stadium remind me of one of the pictures I saw with a plane flying into it. It wasn't the sketch, but maybe it was a photo. Anyway, can anyone post the pictures at this site if they look relevant? Thanks.
http://www.stadia.gr/oaka-new.html
Noticed the link you posted for the olympic stadium and checked out the picture; we are waiting for Bobitutu to post a translation of the message that came with the original drawing of the building or bridge and the aircraft. There was a description or reference on a previous post, something to do with TWO BOWS...that fits with the stadium, if you think of a BOW as in RAINBOW.
Sorry I don't know how to post the photograph...will someone please do so?
http://www.stadia.gr/oaka-new.html