in Silesia is the Romanesque Rotunda under the invocation of St. Nicholas and St. Vaclav (from the 11th century) on Castle Hill in Cieszyn. This Romanesque church has a permanent place on a list of a numerous group of other similar stronghold churches known from the regions of the Czech lands and Moravia. At the same time it is the most popular rotunda in Poland because an average citizen looks at it every day when taking a 20 zloty banknote from their wallet.in Silesia is the Romanesque Rotunda under the invocation of St. Nicholas and St. Vaclav (from the 11th century) on Castle Hill in Cieszyn. This Romanesque church has a permanent place on a list of a numerous group of other similar stronghold churches known from the regions of the Czech lands and Moravia. At the same time it is the most popular rotunda in Poland because an average citizen looks at it every day when taking a 20 zloty banknote from their wallet.