The couple couldn't have looked happier as they took a trip around the picturesque capital with their children.
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Son Rafael, two, rode atop his dad's shoulders. Meanwhile the couple's baby daughter – who turns one in November – was tucked up in a baby carrier, of which a helper took charge.
The famously private couple have yet to reveal their little girl's name. Their toddler son was born in September 2011 but there was no news of the little boy's moniker until July the next year.
Filmmaker Guy was enjoying some family time while in Italy, where he is shooting his new movie The man from U.N.C.L.E.. The new thriller – a remake of the Sixties TV show – stars Henry Cavill.
The British star stepped in after Tom Cruise pulled out to film the next Mission Impossible film.