The Wall in Czechia.

One researched record in Prague in Czechia: one relocated segment.

Between them the sources report one segment of wall.

A further listing for Czechia is held in the catalogue as a draft, out of the map and the indexes until it has 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.