The chancels of many of Wren’s city churches had chequered marble floors and the chancel of St Magnus is an example, the parish agreeing after some debate to place the communion table on a marble ascent with steps and to commission altar rails of Sussex wrought iron. The nave and aisles are paved with freestone flags. A steeple, closely modelled on one built between 1614 and 1624 by François d'Aguilon and Pieter Huyssens for the church of St Carolus Borromeus in Antwerp, was added between 1703 and 1706. London's skyline was transformed by Wren's tall steeples and that of St Magnus is considered to be one of his finest.