Legend says a church here was built by the Badoer family in the 9th Century church and was dedicated to Santa Caterina Martire. It is said to have been rebuilt in 1054 and rededicated to the canonised Pope Leo IX, a supporter of the independence of Venice's churches. The first documented mention dates to 1108. Early in the 16th Century the church was rebuilt by Pietro Lombardo and his son. Reconsecrated in 1619, with the campanile demolished mid-century. Restored in 1783, with a plain façade retaining the Doric doorway from the early-16th Century church. A surprisingly plush and interesting little church - an aisleless nave, created in the 18th Century, with four unsimple side altars.