This five-star establishment’s pool and outdoor hot tubs look out onto the hotel’s majestic neighbour, Aspen (also known as Ajax) Mountain. Rooms at St Regis come with opulent leather and marble furnishings, Bang & Olufsen sound systems, beds and desks custom designed by Ralph Lauren and 24-hour butler service at the touch of a button. Dine in Velvet Buck and sip on outstanding cocktails at the Mountain Social. Kim Kardashian, Kanye West and daughter North, Paris Hilton and Uma Thurman have all stayed here.