"Torni paloi muutama vuosi sitten ja sen jälkeen purettiin. https://yle.fi/a/3-12001995"
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: 2025-02-27T10:33:49Z
POI name: Marjaniemen lintutorni
POI types: man_made-tower
#organicmaps android

"Kirjoitusvirhe nimessä, ks. esim. https://static.heikolankylaseura.com/Erareitiston-uusi-kartta.pdf"
OSM snapshot date: 2025-02-27T10:33:49Z
POI name: Ryyppykallion laavu
POI types: amenity-shelter-lean_to
#organicmaps android

I can't find this building on the MML map, or on bing aerials. Since it was added 8 years ago into the database, it's unlikely outdated aerials, more likely just an editing mistake and the building should be removed.

"Lintujen tarkkailua varten puusta rakennettu yleinen näköalapaikka, ei ainoastaan torni"
OSM snapshot date: 2025-02-27T10:33:49Z
POI name: Friskalanlahden lintutorni
POI types: man_made-tower
#organicmaps android

Tässä ei ole enää parkkipaikkaa.

"This location has permanently closed."
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: 2025-02-27T10:33:49Z
POI name: Naughty BRGR
POI types: toilets-yes cuisine-american wheelchair-no amenity-restaurant cuisine-vegan cuisine-vegetarian
#organicmaps ios

Unable to answer "What are the opening hours here?" – Pyöräliike Viertola (Bicycle Shop) – node/7053682341 via StreetComplete_ee 60.3:

Duplicit POI

no building here

#OsmAnd

Add paths and remap this park, looks recently renovated

via StreetComplete_ee 60.3

GPS Trace: @Alexander%20Slesarev/traces/11958302

Parallel gravel path between paved road abd bank

via StreetComplete_ee 60.3