It is the only survivor of the original 15 windmills that once occupied the ramparts of Delft.
The name 'De Roos' (The Rose) reflects its historic location near the city's former defensive wall gates.
The mill operates using wind power when weather conditions allow, maintaining traditional milling techniques.
The structure is a 'stellingmolen,' meaning it features an external gallery or balcony for the miller to reach the sails.
Unlike many preserved mills, this remains a working commercial facility producing artisanal flour.
Windmill de Roos is the last remaining windmill in the city of Delft, constructed in 1679 and rebuilt in its current form in 1889. It functions as a grain mill that continues to produce flour for local use. The tower mill type design features a stone base topped by a wooden smock, characteristic of Dutch industrial heritage. Visitors can observe the mechanical operation of the millstones and historical milling equipment inside the structure. The mill underwent significant restoration in the early 21st century to maintain its structural integrity and functional capability. It is situated on the edge of the historic city center, integrated into the urban landscape rather than an open field. The ground floor often houses a shop selling various flour products ground directly on-site.
From the bridge on Phoenixstraat, which allows you to capture the full vertical profile of the mill against the sky.
Check the rotation of the sails before visiting; if they are turning, the mill is actively grinding grain.
Purchase a bag of freshly milled flour from the ground-floor shop to support the mill's maintenance.
Ask the volunteers about the 'catchment' area; they often explain how the sails are adjusted for wind speed.
Do not attempt to climb the stairs if you have limited mobility, as the ladder-like steps are narrow and steep.
Generally closed on Sundays and Mondays; operation is highly dependent on volunteer availability and wind conditions.
Wear sturdy, flat-soled shoes for climbing the steep, narrow wooden stairs inside the mill.
