It's known as a bill of goods.
Before Capstone, there was a single use urgent care building and I don't recall what else in the several-block swath. 
The out-of-state developers approached the City and said, we can only build this monster if we get a tax break. The city jumped at the chance for the new Multi-Unit contender for the Carbuncle Cup. The City got so excited that it waived all aesthetic value. So, the developers will pay tax on the land, not on the improvement, until after the 10 years. All of this is moot, really, because the development recently sold for $104M.
One could look at The Tate - a high-end development that needed the MUPTE boundary moved to qualify. Very high-end condos that, of course, the well-to-do don't have the money to pay fair market taxes with....