Ostrów Tumski
Surrounded by the river Oder, the old burgh, the origin of the city, has fantastic architecture. The greatest ones are the Gothic St. John Baptist cathedral, rebuilt after World War II and Holy Cross church.There is the Archdiocese Museum there, the oldest historically continuous museum in Wrocław - for over 100 years it has gathered sacral art, which was excluded from cult use and has great historical and artistic value. Among the exhibits one can find Henrykowska Book from 13th-14th century, which contains the first sentence written in Polish.