The Cathammer
Mill De Kathammer is located in Katwoude, near Volendam, and has been pumping the Katwoude-Hogendijk polder, now part of Hoogheemraadschap Hollands Noorderkwartier, for centuries.
The original mill on this site was lost to fire in 1895. A new one was built, but decommissioned in 1911 after a diesel engine was installed. Around 1931, the cap was removed and only the mill stump remained, which served as a pumping station for many years.
In 1988, De Kathammer was fully restored and since then it has been running and grinding regularly again. For over 30 years, Roel Boulengier managed the mill, until he handed over the baton to Ton Roelofsma in 2019.
Today, the Kathammer is a working mill with a rich past - a beautiful piece of water history in Laag Holland.
Opening hours
- Daily 1 April - 31 October; for groups only, by telephone appointment.