"is closed; building will eventually be torn 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: 2026-05-27T00:05:23Z
POI name: Hammas Mehiläinen Leanportti
POI types: building amenity-dentist
#organicmaps ios 2026.06.01-1-ios

"Ticket Office is probably not the right category but marking the actual entrance would be helpful"
OSM snapshot date: 2025-06-08T00:18:23Z
POI name: Entrata Piazza del Colosseo
POI types: shop-ticket
#organicmaps ios

"fixed spelling mistake "
OSM snapshot date: 2025-05-11T16:17:16Z
POI name: Ν.Ο.Ρ.
POI types: leisure-swimming_pool sport-swimming
#organicmaps ios

"From Dodekanisos Seaways website: High speed catamaran "Dodekanisos Express" and "Dodekanisos Pride" depart from "Kolona Port"."
OSM snapshot date: 2025-05-11T16:17:16Z
POI name: Dodekanisos Seaways Kolona Port
POI types: shop-ticket
#organicmaps ios