It's a family affair at Sammlung Rosengart, a stunning collection of 19th- and 20th-century artworks housed in a grand neoclassical Swiss National Bank building that dates from 1924. Amassed by father and daughter art collectors Siegfried and Angela Rosengart, the collection of hundreds of works by dozens of classic modern artists is one of the city's great draws and a testament to civic generosity. There are some 50 works by Picasso in the collection, mostly from the 1950s and '60s. Other artists in the collection include Bonnard, Braque, Cézanne, Chagall, Kandinsky, Klee, Léger, Matisse, Miró, Modigliani, Monet, Pissarro, Renoir, Seurat, Utrillo, and Vuillard. A great accompaniment to the artworks on display are some 200 photographs of Picasso at work and play, taken by David Douglas Duncan and offering true insight into the life and style of the 20th century's most famous artist. In 1978, Ms Rosengart presented the city with no less than eight Picasso masterpieces to celebrate Lucerne's 800th anniversary, and the friendship between the artist and collector is evident in the five portraits that he painted of her, all on display.