With its massive west tower, the only preserved Romanesque columned basilica in the Rhineland looks like a compact fortress. St. George's interior gives a different impression than the blocky exterior suggests. Columns, partly reused from Roman buildings, divide the church into three naves.
Originally the basilica had a flat ceiling. In the 12th century it was replaced by vaults. Since then, the two additional pillars have broken through the unity of the basilica. Since the 1920s, the expressionist windows by Jan Thorn-Prikker and the two large crosses from the 11th and 14th centuries have shaped the spatial impression in St. Georg.