The opening of this year’s ArtBasel has been marred by the resignation of the organization’s charismatic director Sam Keller. “Keller will leave ArtBasel in 2008 to take up the helm at the Beyeler Foundation, replacing current director Christoph Vitali. The foundation, established in 1982 by the collector Ernst Beyeler on the outskirts of Basel, houses a permanent collection of modern art in a building designed by Italian architect Renzo Piano.”