"it’s on the opposite side"
The place has gone or never existed. This is an auto-generated note from MAPS.ME application: a user reports a POI that is visible on a map (which can be outdated), but cannot be found on the ground.
POI name: Hoàng thành Thăng Long
POI types: historic-ruins
OSM data version: 2018-08-04T14:22:01Z
#mapsme

"Kailassa Mountain"
POI has no name
POI types: leisure-park natural-wood
OSM data version: 2018-08-04T14:22:01Z
#mapsme