The Oostzijde Molen is a Dutch windmill from 1874 on the river Gein, which was used as a polder mill. A mill is said to have stood on the same site as early as 1486
This beautiful mill was built in 1874 to drain the Oostzijds polder. The mill has not been in use since 1950. Today the mill also bears the name Delphine, which was given to it by a French owner who bought the mill in 1952.