De Drie Koornbloemen, Rotterdam

De Drie Koornbloemen from 1770 is the oldest still existing mill in Schiedam and is owned by 18 burners. It is the only mill with a miller's house attached to it.

In the early 19th century, the mill was used for cutting mahogany wood and a few years later as a rice husking mill. When the milling tax was lifted in 1857, owner Kouwenhoven decided to resume milling for bakers. Later generations of Kouwenhoven began grinding peas, corn and beans for processing into animal feed. In 1938, J. R. Sjoer bought the mill and refurbished it to grind stones into grit for his brick and tile business. In the 1950s, the mill again housed a feed and grain business.

In 1976 the municipality of Schiedam bought the mill and later the mill and miller's house were completely restored. To preserve the mill for the future, the wooden interior is being repaired and rebuilt in 2007. Foundation De Schiedamse Molens is planning to reinstall the former peeling mechanism in the mill.