This early 20th-century art nouveau mansion is a prime example of the modernist architecture at that time, moving away from the use of stone to iron, glass and ceramics. It now houses the city's Art Nouveau and Art Déco museum where one can admire over 1600 works of art from the modernist and belle epoque periods. The porcelain dolls, the Fabergé jewels and the Lalique and Emile Gallé glasswork are all outstanding. There are also displays of paintings, furniture, porcelain, enamels and bronzes.