The Wall in Greece.

One researched record in Thessaloniki in Greece: one relocated segment.

A further three listings for Greece are held in the catalogue as drafts, out of the map and the indexes until they have been researched.

Every record is labelled Reported: a credible source says the object is there, not that anyone has confirmed it in person. How claims are weighed is set out in the research methodology, and the reading room explains how the Wall came to be spread across places at all.