The world's largest urban area in terms of volumes of human-made infrastructure?

WHich do you think is the urban area (by this meaning the metropolitan area and the rest of the urban sprawl of a city) has the most voluminous man-made infrastructure in total? (Of coarse there is no definite answers to this question - I'm just interested what you guys think is it. This question is should be answered based upon each persons opinion.) By the word infrastructure I mean, any tangible matter that was enhanced by humans to fit a certain purpose that may serve himself/herself or rather the entire community.

For example:

I chose Tokyo to be the city with the most voluminous man-made infrastructure put in place compared to any other huma settlement on this planet because:
1.) It has the world's largest urban railway network
2.) It has the world's largest storm-water drainage system (G-Cans Project)
3.) The most amount of reclamation areas within an urban conurbation.
4.) A seemingly endless or almost undisturbed sprawl of ultra-dense blocks as
far as the eye can see. (It probably even beats Sao Paulo's 48,000
high-rise count)
5.) Building sized Luxury Fashion Mega-Stores or Epicenters. Where else can
one see a huge concentration of building-sized boutiques of brands
like:
Louis Vuitton, Chanel, Prada, Hermes, Tod's, Salvatorre Ferragamo,
and Burberrys? Only Tokyo!
6.) The most sprawed-out built-up urban area in the world with exception from the uber-sprawed American cities like New York Tri-State Area, Chicagoland, San Francisco-Oakland-Sacramento and Southland (Greater Los Angeles). Makes up for a consistent spread of density in all that sprawl.
7.) Most number of Grade-A office space volume in the world. And they are still building like crazy...rban area with the world's third most voluminious buildings undergoing construction after Beijing and Paris. 60 million sq. meters of Grade-A Space which when compared to New York (world # 2) is nearly twice as many.


Rules:
1.) May I just request that if ever you give the city name , at least, an indication ora proof as to why you chose such.
2.) There should be no bashing other urban areas, countries and, most especially, other forumers. Thank You! >