I thought i was missing something, as I haven't been there for a while.
If you "collect" watch towers, then you can look for man_made=tower (a tag that's missing here) + tower:type=observation
For a knowledgeable mapper such as yourself, that does not kake it an attraction.
Unfortunately, iMO, IHM lets anyone easily add a 'tourist attraction" for anything that does not fall into any other category. 
Unlike you, most of them do not bother putting the appropriate OSM tags afterwards.