As part of the years long process called the "Nuovi Uffizi" the Tribuna, the late 16th century octogonal parlor by Buontalenti built for Francesco I de' Medici as a gallery, has been completely restored and is now re-opened (the work was actually finished in 2012 and took over 3 years with funding coming from the non-profit group Friends of Florence).
Unfortunately this means that you can no longer walk through the room, but must just look in from three of the openings that are protected by a thick glass barrier that goes up to about chest high.
It isn't terrible, but being in the room was quite an experience. Everything in the room has been restored and cleaned, all the architecture, as well as all the sculptures and paintings. It is quite a slice of art history and looks fantastic and should for decades to come. Of course photos are not allowed inside of the Uffizi but someone managed to get this one to us:
This room was a highlight of the "Grand Tour", and the Medici Venus in the center was arguably the most famous (and one of the most copied) Venus sculpture known before eventually being eclipsed by the Venus de Milo.