The history of the De Hoop Mill in Harderwijk can be traced back to 1621, when the first mill was built near the stronghold, where the town hall now stands. The mill has been rebuilt several times, with the most recent time being in 1992, after the previous mill burned down in 1969. The mill was rebuilt in 1998, and re-opened in 1999. The mill is open to the public, but opening hours vary depending on the season.