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 This is an auto-generated note from MAPS.ME application: a user reports a POI that is visible on a map (which can be outdated), but cannot be found on the ground. User comments: "юсуповский дворец не здесь. это корпус санатория "Белоруссия"" (OSM data version: 2016-08-22T09:03:02Z) #mapsme