Steam mill Cruquius build in 1849 is one of three mills whereby the Haarlemmerlake between 1849 en 1852 has been emptied.
The steam mill Cruquius is itself a Netherlands \'Rijksmonument\' for the steam history of the engine within, and it has also been declared an Anchor Point of ERIH, The European Route of Industrial Heritage. It is thought to be the largest steam engine – and certainly the largest beam engine – ever built. The engine was built by Harvey & Co, of Hayle, Cornwall. The diameter of the piston is 144 inches (3.7 m).)
