Best of Architecture View fullsize Cattedrale di Santa Maria del Fiore (Florence Cathedral). Florence, Italy (May 2011) View fullsize Italy (May 2011) View fullsize Sydney Opera House. Sydney, Australia (2009) View fullsize Amsterdam, Netherlands (2008) View fullsize The Colosseum. Rome, Italy (May 2011) View fullsize Cattedrale di Santa Maria del Fiore (Florence Cathedral). Florence, Italy (May 2011) View fullsize The Atomium. Brussels, Belgium (June 2014)