This is the big Dome on the cathedral. You can go up to the top and look out from the viewing platform, over Florence. Simply the best sight in the city. It takes a fair amount of queuing - check times and make sure you don't leave it too late - and the climb to the top can take up to 20 minutes, but it is brilliant. Not only do you get a 360 degree view of the city but you see the inside of the Dome in close up, on the way up and way down. The one unmissable sight in Florence, in my opinion.
Ufficio del Duomo
Tel: 055 2302885
www.duomofirenze.it/index-eng.htm
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Or, climb up the campanile right next to it, with smaller queues. That way you get to have the Dome in your photos.
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