Argonne is easily accessible by car or public transportation from downtown Chicago, as well as from Chicago's two airports. To reach Argonne from O'Hare International Airport, take I-294 south to I-55. Exit west on I-55 (toward St. Louis) and continue for about four miles to Cass Avenue. Exit south on Cass and turn right at the Argonne sign on Northgate Road, immediately south of I-55. Follow Northgate Road to the Argonne Information Center.
To reach Argonne from Midway Airport, take Cicero Avenue north to I-55. Enter I-55 south and continue for about 14 miles to Cass Avenue. Exit south on Cass and turn right at the Argonne sign on Northgate Road, immediately south of I-55. Follow Northgate Road to the Argonne Information Center (Building 224).
Please note: If using GPS directions, use the intersection of Cass Avenue and Northgate Road, Lemont, IL, as the destination (using Argonne's mailing address may not result in the correct location).
Taxi and limousine service from O'Hare and Midway airports is also available. One option is American Taxi: https://www.americantaxi.com/ATOnlineOrderWeb/main.htm
All visitors must check in at the Visitor's Center to pick up their visitor badge/gate pass. Visitor gate passes are available for pickup at the Argonne Information Center (Building 224) at the Main Gate entrance off Cass Avenue between the hours of 6:30 a.m.–5:00 p.m. Monday–Friday. Once you have checked in at the visitor's center and obtained your pass, you will proceed to the main security gate. If you arrive outside those hours, your gate pass will be available at the main security gate (open 24-hour) after you show identification. Please note that all vehicles are subject to search prior to entry. Security can direct you and there are signs on site for locating Building 401 (APS/Advanced Photon Source) and Argonne Guest House (Bldg. 460).
For location and other visitor information, please see https://www.anl.gov/visiting-argonne
A valid driver's license is required to pick up your visitors pass at the visitors center. In addition, Argonne accepts the following alternate access control options:
Badge and Gate Pass Requirements:
