PennPlace is Penn’s first-ever live 3D construction platform, designed to make 3D modeling accessible, collaborative, and fun for all skill levels. Built by a student-led team at Penn Spark in just three months, the platform achieved 30,000+ creations and engaged 300+ active collaborators, earning recognition as the ‘Best Project’ of the semester. Through a focus on usability, collaborative workflows, and thoughtful mode-switch interaction, it offers a seamless experience across both web and mobile.