Palazzo della Cancelleria in Rome

You're standing at the Palazzo della Cancelleria, between Corso Vittorio Emanuele II and the Campo de' Fiori. Take a look along that long, elegant façade. This was the first palace in Rome built from the ground up in the new Renaissance style. See the flat, doubled pilasters between the arched windows? That rhythm comes straight from Florence. The stonework, smooth blocks with grooves cut around the edges, is an ancient Roman idea.