More than 500 years after it was built, Filippo Brunelleschi's dome of Santa Maria del Fiore in Florence, Italy, remains the largest masonry dome ever built. Leaving no plans or sketches behind, some of the secrets of its construction that Brunelleschi pioneered are still an enigma today. This short animation, presented by National Geographic and created by Fernando Baptista and Matthew Twombly, gives an idea of how the dome of the Duomo might have been built. Demonstrating the complexity of the task, made harder due to poor construction prior to Brunelleschi's commission, this film serves as a reminder of just how long it can take to create something timeless.
