The Millennium Knickerbocker Hotel in Chicago, US, has unveiled the first phase of its US$27m (£14.2m, 18m euro) refurbishment.

Boston-based Jinnie Kim Design was responsible for the plans, which included transforming all 306 guest rooms, in a "contemporary style that highlights details hearkening back to the hotel's 1920s origination".

General manager, Anthony Kinnear, said: "The redesign of our guest accommodation brings our hotel to a level of luxury befitting its grand beginnings and Magnificent Mile location."

The second phase of the revamp will begin in December and will include work on a new fitness centre, a new entrance and lobby a new champagne salon and a new restaurant, which will all be designed by the San Francisco-based Interior Design Workshop.

The hotel is owned by Millennium Hotels & Resorts, the US arm of the London-based Millennium & Copthorne Hotels.