Architect John Kirksey has an idea for building a park on 36 blocks in south Downtown — just north of the Pierce Elevated, between Louisiana and Caroline. But he doesn’t own the land, and he’s not proposing to buy it up. So Kirksey’s plan isn’t for a single park space — it’s for a bunch of linear walkways. Okay, call it a series of extra-wide sidewalks on the east-west streets. Here’s how it might look, driving through: