I thought the first 30 mins and last 30 mins were the most breathtaking personally, loved the way Angelopoulos filmed the early Mastroianni scenes.
Already mentioned is the pure spectacle of the wedding across the river, which suggests the absurdity of national borders as an affront to the natural human instinct to create links between people, so I'll suggest another scene instead. A ramshackle performance of Let it Be - where the lyrics, in English, express unconscious yearning for unification - placed against the naked testimony of a young man, whose disfigured arm is a reminded of who he is and where he came from. A subtle but emotionally complex moment that stands in quiet contrast to some of the film's more towering observations.
My favourite film of angelopoulos;as already noted the scene of the wedding divided by the river seems to me to summarise the 20th C . I saw it first not knowing what or who, in paris in french, my command of the language is not the best , yet it made me realise that (obviously?)film is essentially a visual medium, although it is sometimes possible to wildly misunderstand the plot , in the case of angelopoulos the atmosphere was the thing ,
Two scenes that would haunt me for the rest of my life. One, the journalist standing next to the line in the middle of the bridge, his right leg suspended in air. Second, the wedding, divided by the river, divided by the border, divided by politics...
so close to being a masterpiece. it stalls midway, for some unknown reason, but the final 30 mins is amazing. the wedding sequence alone is one of Angelopoulos's greatest set pieces, and is far more integrated into the narrative than it is in other films like Eternity and a Day.