It is unclear what the brown circled ares labelled "210" represent. Can anyone clarify??

Play Ground

via StreetComplete 41.2

"Building tore down"
The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2022-07-18T07:38:05Z
POI name: Pizza Hut
POI types: amenity-restaurant cuisine-pizza
#organicmaps

Gate permanently closed

Unable to answer "Do you have to pay to park here?" for way/363194143 via StreetComplete 34.1:

private parking lot

"Closed permanently last year"
The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2022-06-13T12:43:18Z
POI name: Greyhound
POI types: building amenity-bus_station
#organicmaps

This is not a building. It's just a grassy area where people walk their dogs.

"Empty for years"
The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2022-08-16T07:51:20Z
POI name: The Keg
POI types: building amenity-restaurant cuisine-steak_house
#organicmaps