Launch Complex 39 Pad B at the Kennedy Space Center was built in 1966 for the Apollo program and later modified for the Space Shuttle Program. It was deactivated on January 1, 2007 and converted to accomodate Project Constellation, including three new 600 foot tall lighting mast towers. On October 28, 2009, the Ares I-X test flight successfully launched. With the cancellation of Project Constellation, NASA removed the rotating service structure and offered the pad and facilities to private space flight companies.
Here are pictures taken in April 2011.