The fine lofty tower contains a chime of forty-five bells.
In height and a chime of 13 bells; it has as an altar-piece Murillo's "St Peter Liberated by an Angel."
The belfry which rises in the centre of the facade dates from the end of the 13th century; it has long been famous for its chime of bells, but the civic fathers have caused modern airs to be substituted for the old hymn.
Towards evening it reveals its presence by a clear whistling note, which has often been compared to the sound of a little bell, or to a chime when produced by numerous individuals.
It is remarkable for its fine tower and chime of bells, and contains the splendid allegorical monument of William the Silent, executed by Hendrik de Keyser and his son Pieter about 1621, and the tomb of Hugo Grotius, born in Delft in 1583, whose statue, erected in 1886, stands in the market-place outside the church.