Outside of cost, what would be the downsides of converting large sprawling parking lots into undergroung garages?
This current heatwave got me thinking about just how hot all these asphalt savannahs are. They really heat up the surrounding area. They're also ugly af and are a waste of space. But above ground parking garages are also ugly brutalist boxes, ao why don't we just use underground garages?
Boston has the right idea. Boston Common garage is a huge underground garage with Boston Common sitting atop at ground level, a nice green park with grass and trees. It's the best setup, with many landmarks within walking distance.