Dwingeloo Radio Observatory

The Dwingeloo Radio Observatory (near Dwingeloo, m. Westerveld, in the northeastern Netherlands), is a single dish radio telescope with a diameter of 25 m. Construction started in 1954, the telescope was completed in 1956.At that time it was the largest radio telescope in the world. As of 2000 it is no longer in operation, and since August of 2009 is officially a Dutch industrial heritage monument.