This is why it matters.

For city dwellers, the quality of the park system can literally make a city more or less livable.

But the city really stands out when it comes to park access and park equity.

Willow on Side of Pond with Washington Monument

Credit:Enio DePaz/Getty Images

That level of equality is not found in most big US cities.

The same 45 percent disparity applies to people living in low-income neighborhoods.

Now, the two women regularly help each other with childcare and carpooling.

Washington, D.C.ParkScore (Max 100): 84.8

2.

MinneapolisParkScore: 82.5

3.

St. Paul, MinnesotaParkScore: 81.6

4.

Irvine, CaliforniaParkScore: 80.1

5.

Arlington, VirginiaParkScore: 79.2

6.

SeattleParkScore: 77.4

7.

San FranciscoParkScore: 76.5

8.

CincinnatiParkScore: 75.8

9.

Portland, OregonParkScore: 74.0

10.