Beschreibung
Originating from the second half of the 14th century its outside was built with lime stone quarries and its inside faced with sandstone blocks. Various loopholes helped to repulse approaching attackers. From the art-historical point of view, the stony frescoes (so called “envy heads” to symbolize defense) and coats of arms in the upper tower part are very remarkable. It was part of the southeastern bastions of the townwall and used as a defense facility. Its name derives from Middle High German “sinwel” (= round, circular). Like the Pfeiferturm it symbolizes the pride, importance and tradition of the medieval “Brettheim”.