The first thing I said when I said this amazing work of art was... wow. I kept repeating that word for a couple of minutes because the attention to detail is fantastic, the method used was amazing, and the piece was all around absolutely mind blowing. The fact that this was done with fractals only makes it all the more impressive.
The use of perspective in this piece was also amazingly impressive, and the title definitely fits the overall composition of the piece. Vertigo is the first thing that hits the viewer and the foremost thing that stays on their minds after seeing it.
The way the 'buildings' were carved inwards also adds an amazing sense of depth to the picture. I did feel however that some elevator-like structures at the sides would help reinforce the notion of height in the picture, much like the way birds in photographs does the same.
The coloring feels somewhat drab as well, with an overused brown palette. Perhaps some stark red on white would help? It didn't affect the piece much at all, however.
Basically, the art here rocks, you rock, and it's all awesome.
Awesome job. I think you found an incredibly fitting title for this piece as Vertigo is exactly what it evokes. I get the feeling of it just looking at this. There's a ton of verticality to this piece and I'm really diggin it. Great job.