"Fouquet’s Barrière", Paris

This building is simply awesome. It's designed by the french architect Edouard François, for the hotel chain fouquet. The façade is a replica, in grey concrete, of the monumental façade of the fouquet hotel around the corner, but with new window holes.
Address: 46 avenue Georges V - Champs Elysée.

The architect: http://edouardfrancois.com/