Brunelleschi's Duomo of the 1420s & '30s
The dome of the Cathedral of Santa Maria del Fiore, designed by ... architect 
Filippo Brunelleschi and built in the 1420s-30s, has been a... [DOC] [TLE] Brunelleschi's Dome - National Geographic Magazine [PAR] In 1418 the town fathers of Florence finally addressed a monumental problem 
they'd been ignoring for decades: the enormous hole in the roof of their cathedral.