I've been thinking about the world of 1910, or the last few years—1910, 1911, 1913—right before the First World War… those years after the invention of and adoption of certain modern technologies, but before those technologies became widespread and dominant; a time when there's a counterbalance between nature and civilization; when civilization was industrial, but not yet, completely controlled by mass medial; and before heavy industry got too into chemicals and the food supply and farmland were poisoned; and before, of course, global wars.
Granted, someone from 2024 could not go back to even 1910 without some degree of horror and incomprehension—as undoubtedly that civilization would have been tolerant of far more suffering than ours is (European colonialism was at its vicious peak), but, I think, as a general rule of thumb, the past gets more beautiful the further back you go; aggregate (not acute) suffering per capita might decrease inverse to beauty. Gothic architecture is essentially perfect, but that era was violent and plagued and deeply, unfathomably poor, for example.