|Friday, Feb 14, 2014 - 6:00 AM
"Great Cathedral Mystery"
The engineering behind the dome that crowns Florence's cathedral of Santa Maria del Fione, a Renaissance masterpiece and the world's largest masonry dome, is still debated among historians and engineers. Now a team of U.S. bricklayers helps build an experimental "mini-Duomo" using period tools and techniques to try to unravel how architect Filippo Brunelleschi managed it. G
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