What makes Stadhuis historically important?
The Stadhuis (City Hall) commands the west end of Delft's Markt, facing the Nieuwe Kerk across the square in one of the great architectural face-offs of the Dutch Golden Age. Its cheerful Renaissance front — sandstone and brick, red-and-white shutters, gilded coats of arms — was designed by Hendrick de Keyser and built around 1618-1620 after a fire gutted the earlier building. De Keyser is the same sculptor-architect who created William of Orange's marble tomb inside the church opposite, so a single hand effectively frames both ends of the Markt.
Behind the festive facade hides something far older and darker: the medieval tower known as Het Steen ("The Stone"), a 13th-century structure that is the oldest part of the building and once served as the city's prison. It was here, in 1584, that Balthasar Gérard — the man who shot William of Orange in the nearby Prinsenhof — was held and tortured before his public execution. The City Hall still functions as the ceremonial seat of Delft's government and is best known today as the city's romantic venue for civil weddings, though most day-to-day administration has moved to offices by the station. The interior, with its historic vierschaar (tribunal room), opens mainly for weddings, occasional tours, and heritage days, so most visitors enjoy the Stadhuis from the square — where De Keyser's design has been the backdrop to Delft life for four centuries.

