What does this number measure?
Successive setbacks narrow the tower towards its spire. Displayed dimension: architectural height.
Compare the stated dimensions
The comparison uses the number in each fact sheet: altitude, height, diameter, length or distance, depending on the reference. Two values in metres do not necessarily describe the same property.
Source and limitations
Dimension checked in a primary source that was consulted.
Detailed interpreted illustration. It is not a photograph, an architectural survey or an exact scientific reconstruction.
Opening: 2010. Proposed historical date; an existing documentary source is linked but was not consulted for this date in this session. Do not interpret this reference as the manufacturing date of the illustrated specimen.