The five-star Hotel D'Angleterre has been a bastion of Danish elegance for over 250 years, and a recent renovation provided a complete refurbishment of its 90 rooms. Long a favorite address for visiting luminaries - Ronald Reagan, Mariah Carey, and Grace Kelly have all stayed here - today it manages to deliver a heady blend of old-school luxe and modern edge. The hotel spa is impressive, and the Balthazar champagne bar is a nice spot for some bubbly. All this comes with a hefty price tag, but even those who can't afford a room may want to pop in and admire the gilded glamour of the lobby.