A question for the MCU detail-oriented...

[lokei]

...or possibly Washington DC residents.  In Cap 2, Steve goes to the Smithsonian to his own exhibit--the hallway and escalator kind of looked like Air & Space to me, but the topic makes more sense at the Museum of American History.  Anybody know which museum building it was for sure, or can point me at appropriate screencaps somewhere or something?

(I have not one but two WIPs that have to do with that exhibit, and another in germination, because my day job and my fandom life intersect in weird and fun ways sometimes.)

Thanks!