Windsor Castle's Christmas decorations are up — see how the royal residence, where Kate Middleton and Prince William regularly take meetings, is decked out for the holidays.

Windsor Castle, one of the royal family's official residences, is decorated for Christmas. The 20-foot Christmas tree features a star for the 675th anniversary of the Order of the Garter.

Windsor Castle has been transformed into a Christmas wonderland. The centerpiece of the festive display is a 20-foot-high Nordmann Fir tree in St. George's Hall, grown nearby in Windsor Great Park ...