[Rufus]

I don't really see how the Tower Of Pisa or the Eiffel Tower would be appropriate for your piece, though I could be wrong. Personally I'd go for something with an Astronomy theme. With 'science' being the future, and 'astronomy' depicting something that has been around for centuries (past and future), with Da Vinci being the past, and technology being the future. I just think it would fit your piece more appropriately, though an old building with this modern figure would also work. Astronomy was a strong science in the renaissance, and Da Vinci was quite involved with science too, albeit not astronomy, but you get the point.

edit: THOUGH HE SEEMS UPSET/UNHAPPY SO PERHAPS FOCUS ON SCIENCE, AS THOUGH SCIENCE IS TAKING OVER RATHER THAN ART??

Just a suggestion.. nice work by the way.