In 1952 a North Atlantic Treaty Organization (NATO) base was opened at Bitburg by the U.S. Air Force. At the end of the 1980s, French troops were withdrawn and NATO took over the former French barracks. After the First Gulf War most of the USAF forces were moved to the larger Spangdahlem Air Base, about 12 km east of Bitburg. In 1994, NATO turned the Bitburg Air Base over to the city, which devoted it to public works projects. The Kyll Valley railway was abandoned in the early 21st century, and part of it was converted into a bicycle path ("Radweg").