AttractionsInstitute of Contemporary Art / Boston (ICA)
A striking cantilevered glass-and-steel museum jutting over Boston Harbor in the Seaport, showcasing rotating contemporary art, video and performance with sweeping water views from its grandstand lobby. Go for cutting-edge exhibitions and the waterfront architecture. Practical note: closed Mondays, open late Thursday and Friday to 9 pm, with free admission every Thursday from 5 to 9 pm.