A schuur is a barn or a shed.
Some of my ancestors lived at the Roerdink farm in the Netherlands from the 1400s to the 1600s. The farm still exists. The main building has been renewed but some of the outbuildings have not. They used tree ring dating on the barn a couple of years ago and it was from 1544 so it was built when my ancestors lived there. It is the oldest known barn in the Netherlands.
Cultural Heritage Service (CC-BY-SA).