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"!