Note to several commentators ... vertigo is NOT a fear of heights! It is a condition involving dizziness and/or loss of balance. It is actually more likely to be associated with looking UP than down. What a pity this excellent photograph was apparently marked down because some commentators did not know what they were talking about, and were not prepared to find out.
Funny I should vote on this today..I stayed home from work with a seriou case of vertigo, not a fun thing. Good picture, nice angle, wish sky wasn't so washed out but if this is the Sears Tower (like it appears) I can understand...we haven't had very good skies here lately.
i saw a photo of this building in a photoshop contest taken from a spot probably less than ten feet from where you took it! it definitely gives a sense of vertigo, and your's is better framed than the one from the PS contest.