I find blatantly plopped cities quite conspicuous and oftenunsightly... imho.
Besides that point, here is my city, New Vanta
Not a huge city, around 160k population, networked with smaller satellite cities of 40k~100k.
The majority of the coastal area is residential/commercial integrated zoning. You could say my CBD isn't a true 'business district' in that sense.
I guess you could call this my attempt at a 'green' business park.
Majority of the population takes mass transit, with bus stops at every block and three corridors of heavy rail down the main residential/commercial integrated zone. I'm not a fan of highways =P .