The 12th century campanile has three storeys now above the roofline (it used to have four) in unusually crisp brown brick. Each face of each storey used to have an arcade of four narrow arches, but many of these have been blocked and one face has an unusual one-handed clock (no minute hand). The storeys are separated by projecting dentillate cornices, and coloured ceramic platters have been inset as decoration below these. The top storey facing the street has a statue of St Helena in a niche with a little gabled aedicule.