Unable to answer "What kind of memorial is this?" for https://osm.org/node/498755053 via StreetComplete 53.1:

è un edificio alto circa 8-10 m che doveva essere usato come tomba, ma è rimasto vuoto. al momento in rovina.
it's a building about 8-10 m high, which was supposed to be used as a tomb but it's empty.