The US ITER Project Office is located at 1055 Commerce Park Drive in Oak Ridge, Tennessee, outside the Oak Ridge National Laboratory gates. To visit US ITER, do not go to the lab, unless you have been specifically directed to do so by your on-site contact. Parking is available next to the Project Office building.
Detailed maps are available:
US ITER – Oak Ridge Office (Google Maps)
More details about visiting Oak Ridge National Laboratory and area are available here.