MCU- After the battle of New York all the avengers are living in Avengers Tower. Steve and Tony have, of course, not been on the best of terms, but Tony starts noticing that Steve is struggling with living in the new millennium. Not so much with things like tech and pop culture (though he does struggle with the later) but mostly with history since he went under. Tony decides to make it his personal mission to help him learn some of these things by planning and taking him (and the rest of the avengers?) on a trip around the world to void it major hotspots of history and culture that were significant between 1945 and 2011. Obviously they start falling in love through out the trip, but that’s a given, right?