The Sweachmermolen is an historic water mill located on Boarnsweachsterdyk in the town of Langweer. The mill was built in 1872, and was originally used as a corn mill. The Sweachmermolen is now owned by the Langweerder Mill foundation, and has been converted into a a holiday home. The Foundation is renting the home out to holiday makers, and will use the funds it generates to restore the mill. The mill is open to the public during times when it is not being rented out.