The Molen ‘t Slot (Mill on the Castle) is situated near the old town centre of Gouda and along the river Holland IJssel. The mill stands proudly on his spot since the year of 1832, replacing an earlier octagonal mill which was destroyed in 1831 by fire. It is however the third mill at this spot.
The history goes even further back. The first mill was built (1581) on the foundations of a castle. The name ‘t Slot refers to the castle of the 'Heeren van ter Gouw', which was demolished in1577.

Flour mill 't Slot is a so called smock mill. A smock mill is a type of windmill that consists of a sloping, horizontally weather boarded tower. It is topped with a cap that rotates to bring the sails into the wind.

The mill is open for visitors when the sails are turning.