"Park space" refers to an area designed for people to relax or play in. It usually includes grass, trees, benches, playgrounds, and other features for recreational activities. Full definition
It's particularly useful when reversing out of parking spaces in a crowded parking lot. (wilsongm.com)
There's probably some kind of natural law explaining this, but I'm sure humans have a tendency to underestimate the number of parking spaces in any given area. (treehugger.com)
By the apartment, there is also private parking spaces for guests. (hosteltraveler.com)