The tunnels in which Loki escapes with the hypercube, are located in Pensylvania. The largest mushroom farm in the world was used as a filming location. At One Moonlight Drive, Worthington, PA 16262, Creekside mushroom farm is located.
The laboratory used in “The Avengers” is in fact a research facility for NASA. Plum Brook Station in Ohio was dressed to suit the needs for the crew, a huge vacuum chamber was the main location.
For the blockbuster “The Avengers”, a secret S.H.I.E.L.D. base was created in New Mexico, Alberquerque. It was in fact a high school, but the production team dressed the location up with high tech features, like a helicopter pad.