It's impossible to walk around Florence at any time of day and not risk bumping into people, light poles, or parked cars. Because wherever you go, you're confronted with the evidence that it was the Florence of Giotto, Michelangelo, Ghiberti, Donatello, Mantegna, Masaccio, and Botticelli. And that's what draws your attention.
But even with the work of all those geniuses, it's the work of Filippo Brunelleschi who built the Duomo that dominates. Incidentally it was Brunelleschi whocodified the method of painting in linear perspective. Sort of like the lines in this photo, which lead your eye to his Dome.
Before he discovered how to do this, nobody knew how to systematically draw something that looks like this.
And they didn't have cameras back then.