The phrase "curious passersby" refers to people who are walking by or passing a place and are interested or intrigued by something they see. Full definition
Since the installation went up several months ago, students continue to repair deteriorating areas and to relate stories of curious passersby drawn in by our work. (edutopia.org)
Curious passersby crowded around, asking for «interpretation of the wildlife.» (cbhistory.org)
An offbeat art exhibit currently on view at Halsey McKay Gallery in East Hampton Village, NY has curious passersby stopping in their tracks to gaze through the gallery's large front window and wonder what exactly is going on. (hamptonsarthub.com)