The Milwaukee World Oddities Expo is a marketplace and showcase for curiosities, macabre art, taxidermy, vintage medical ephemera, and alternative culture that attracts collectors, artists, and enthusiasts. It takes place at the Baird Center in Milwaukee and combines vendor booths with curated exhibits, live sideshow and performance acts, and specialty talks or demonstrations. The event is notable for its focus on rare and unusual objects and its crossover of art, natural history, and oddity-collecting communities.