Mountain resort of Aspen, Colorado is the holiday destination for all seasons

Think Aspen, and think winter playground for the rich and fabulous, where ski instructors get tipped in Cadillacs and 50 of the world’s 1,600 billionaires own property here. A small pretty Colorado town of 6,000 permanent residents, it is the 11th most expensive post code (out of 22,000) in the US. Think private jets and famous faces — a snowy Hollywood whose winter population peaks at 26,000. Where hotels offer gourmet room service for dogs, and a ski jacket can cost three grand.