It’s pretty interesting to compare the different space requirements of various urban typologies. In the example above, the yellow lines represent (potential) retail frontage of different parts of Louisville (examples B and C account for full or partial double-loaded corridors). The linear distance is represented up at the top in gray. (I mentioned “partial” before as it’s unrealistic to assume 100 percent of a city block will be covered in retail space, even though the potential exists that nearly all of it could be.) As you can see, four city blocks take up the lease amount of space while offering the most retail opportunity (and it offers other uses above the ground floor). The others don’t even come close.