Annual Cambridge Arts River Festival on Memorial Drive between JFK Street and Western Avenue. Six stages of music, theater, dance and poetry, an international food bazaar with 100+ specialty food purveyors and craftspeople, local art markets, art demonstrations, family art-making activities, and the whimsical Mermaid Promenade where costumes are encouraged. Date approximate — verify against cambridgema.gov when 2026 schedule is published.