Historical Marker
John Brown Monument
Historical marker location:
Harpers Ferry, West Virginia
( Marker can be reached from Potomac Street, 0 miles west of Shenadoah Street (Business U.S. 340), on the right when traveling west.)
West Virginia is home to the Green Bank Telescope, the world's largest fully steerable radio telescope. It is operated by the National Radio Astronomy Observatory and is located in the Allegheny Mountains.