Big business.

Grandes equipamentos culturais": With that useful phrase the organizers of the fourth Arte/Cidade, a series of projects in Sao Paulo, describe the giantism not only of contemporary museums but also their megacity hosts. Recruited by curator Nelson Brissac and Museum Boijmans van Beunigen director Chris Dercon, a corps of international art-world shock troops--Vito Acconci, Atelier van Lieshout, Krzysztof Wodiczko, and some twenty others--will "intervene" in the city's sprawling eastern reaches. From April 3 to 6 a workshop will be held, with Rem Koolhaas as master of ceremonies. Large cultural equipment, indeed (Jan. 13-Apr. 30).