Examining the 15th-century, Filippo Brunelleschi-designed dome that crowns the cathedral of Santa Maria del Fiore in Florence, Italy. Known as the Duomo, it consists of four million bricks, is taller than the Statue of Liberty and weighs about the same as a cruise ship. Included: bricklayers build an experimental "mini-Duomo" using period tools and techniques.
Great Cathedral Mystery Photos
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