'Sion' is a small castle in the
Czech Republic, near
Kutná Hora. It has been founded between
1426 and
1427 by
Hussite Jan Roháč of Dubá. After a successful four month siege the castle was conquered and burned by
Emperor Sigismund's allies in
1437. Nowadays only scattered parts of the basement stone walls with some arches and stairs remain of the original castle.