What type of "anchor" is this ? osm.wiki/Key:tower:* , or is it a simple tower- like building ? osm.wiki/Tag:building%3Dtower

Should be an area osm.org/node/665284758 >>> osm.wiki/Key:aeroway:balloon

Most likely a line_attachment=anchor ? osm.wiki/Tag%3Atower%3Atype%3Danchor

osm.org/node/11039886825 >> boat:tours osm.wiki/Key:boat:tours for sport=scuba_diving ?

airstrip ? osm.wiki/Tag%3Aaeroway%3Aballoon%3Dairstrip

2008 discussion abandoned osm.wiki/Proposal:Model_Aerodrome, new namespace: osm.wiki/Key:aeroway#Models

2008 discussion abandoned osm.wiki/wiki/Proposal:Model_Aerodrome, new namespace: osm.wiki/wiki/Key:aeroway#Models

2008 discussion abandoned osm.wiki/Proposal:Model_Aerodrome, new namespace: osm.wiki/Key:aeroway#Models

2008 discussion abandoned osm.wiki/Proposal:Model_Aerodrome, new namespace: osm.wiki/Key:aeroway#Models

2008 discussion abandoned osm.wiki/Proposal:Model_Aerodrome, new namespace: osm.wiki/Key:aeroway#Models