Downtown Oklahoma City was booming in the 50s and 60s. It died and was horrid when the malls opened up, and urban renewal demolished a lot of cool old buildings. In the late 70s I went down to the area called Bricktown, which is all old brick warehouses, and I remember thinking, never come down here at night.
Then Penn Square Bank failed and the bottom fell out in 1982. The almost rolled up the sidewalks in downtown at night.
Then in the 1990s we hired a great Mayor, Ron Norick. He managed to get a "temporary" one penny sales tax added to the tax code. All the money from that did NOT go to the general fund, it went to MAPPS.
https://en.wikipedia.org/wiki/Metropolitan_Area_Projects_Plan
After Mapps 1 through 4 Oklahoma City is a totally different place. Olympic training facilities, The Thunder NBA team, dozens of new hotels, a canal, and a downtown city park that is huge. An amazing transformation.