From one look at the colorful exterior of Stuttgart's State Gallery, you know it's not another stodgy museum. 

The 1984 opening of the new building, designed by James Stirling and itself a masterpiece of contemporary architecture, marked the transformation of the museum into one of the finest art collections in Europe — and one of Germany's most visited museums.

Although it has an excellent representation of German Renaissance art, as well as Dutch and Italian masters from the 14th to 19th centuries, the Staatsgalerie is best known for its outstanding collection of 20th-century paintings.