Concierge.com's insider take:

Built in the 1930s, this lofty pavilion on the edge of the Parco Sempione gardens has found new life as an exhibition venue and design center after years of decline. Originally built to house a triennial art show—hence the name—the renovated space now plays host to temporary exhibitions of contemporary art (Keith Haring, Andy Warhol, and Jean-Michel Basquiat were recent subjects) and architecture. The ground-level café, with its mismatched designer-classic chairs, has become a popular meeting spot, and the adjacent shop is a good place to stock up on art books and gift items. In November 2007, the Triennale will open what Milan so shockingly lacks: a museum dedicated to the city's strong 20th-century design tradition. In November 2006, the Triennale opened a sister gallery, Triennale Bovisa, in a former industrial suburb in the northwestern outskirts that is fast becoming a university and cultural hub (31 Via Lambruschini; 36-02-3657-7801).