I’ve got to go do ‘moon stuff.’
After their mission, Sam and Lt. Torres get some rest in a small Tunisian courtyard and marketplace.
According to filming reports, this sequence was shot in Prague, in what appears to be a redressed Czech courtyard. Finding it was no easy feat, and was aided by a behind-the-scenes image posted at FandimeFilmu, which I have reproduced below. Using this image I was able to see what more of the space looked like, and was also able to see into the courtyard from the Google Street View (below) to see the opposing windows/doors and the mannequin with a white dress. The actual address is Malostranské nám. 272, 118 00 Malá Strana, in Prague.
(The Falcon and The Winter Soldier S01E01, 2021)