For its 25th anniversary, the foundation is unveiling treasures held by Swiss citizens, whose collections of European and American painting and sculpture were fortunate to have survived World War II. While many major artists are only represented by a single painting here, it is not surprising that Swiss artists — like Hodler, Vallotton and Giacometti — should have several works in the display. In the end, the show covers most of the aesthetic concepts that make up the fabric of early 20th-century art history. Left, René Magritte's "La ruse symétrique, 1928" (Private collection).