Medical museums around the world display medical curiosities related to niche biology , pathology , anatomy and cultural history . World Museum Day is May 1 . Curios include two - headed dog , one - eyed creatures , two conjoined twins and brains infected with mad cow disease .
Medical museums around the world display grotesque curiosities related to niche medicine , pathology , anatomy and cultural trends . International Museum Day is May 18 . Curios include two-headed dog , one-eyed creatures , preserved conjoined twins and brains infected with mad cow disease .