Architectural oddities include "jokes" such as purposely incorrect
doorway lintels and keystones. The "Palazzo di Té" is located at
Mantua, and the Venetto is well known for its architectural achievements!
Note that walls, and ceiling or archways (red arrows)
have finely worked surfaces with "lacunars" (recessed areas), and the the
semicircular niches in the walls (green arrows)
are finely worked too, but note the purposely rusticated columns
(blue arrows), yet these rusticated columns still
have finely wrought capitols and bases (yellow arrows).
Clearly the architectural "errors" are not errors of oversight, these were
carefully planned "errors"!