In the first Iron Man the location of the Stark Industries Headquarters is in Long Beach, and while the headquarters are actually CGI, the many buildings around it are not, and I paid them a visit.
The California Bank of Trust is renamed as the infamous Roxxon Corporation.
The majority of the actual fight takes place on the road, and here you can see the familiar walls which feature prominently during the scene.
LOCATION
The best place to view this filming location is from W Seaside Drive, which is a relatively quiet road, and it has a small shingled area where you can stand safely.