Valuable historical monuments can be seen even in the industrial city of Ostrava. Visit Silesian Ostrava Castle, which stands on a small hill above the confluence of the Ostravice and Lučina in the southern part of Silesian Ostrava. The castle was built by a Těšín prince from the Piastovec family as a borderland fortress against the Czech state in the second half of the 13th century. It was converted during the Renaissance and the entrance gate with a tower dating back to the 16th century has been preserved until this very day. The complex recently underwent extensive renovation and is regularly brought to life by a range of cultural events. The castle cellars are home to an aquarium with freshwater fish, a museum of witches and torture exhibition. You can look out over the centre of Ostrava from the lookout tower on the top floor. Children will especially appreciate a scary night in the castle.