The building has a Greek cross plan with a nave and two aisles, divided into four bays by rectangular piers.
The dome is supported by huge rectangular piers, with smooth pendentives and stalactite decorations.
The arcade is carried on one circular and one rectangular pier.
A rectangular pier jutted out over the river.
The rectangular pier at the end of the terrace affords another example.
Internally, the nave is separated from the south aisle with a three-bay arcade of 13th-century pointed arches on rectangular piers.
The domes are carried on pendentives and below are rectangular piers without capitals.
The latter was surmounted by a brick facing with a rubble core, to which a rectangular pier was attached.
Six engaged Ionic columns comprise the colonnade, which is flanked by rectangular piers.
These are usually rectangular wooden piers with a pavilion covering part of the; most offer massages, yoga and saunas, as well as snacks.