Recent research shows that infrared cameras can help students visualize and interpret notoriously challenging thermal concepts. This chapter describes the application of thermal visualization in a public setting. Specifically, we present the design and implementation of an augmented reality system for the real-time projection of thermal imagery onto objects. Examples of hands-on activities for visualizing thermal processes with the system include conduction and insulation, rubber band thermodynamics, friction, impact heating, enthalpy of chemical reactions, radiation wavelength, mixing liquids, and heat of evaporation. We discuss how the interactive activities might provide pedagogical opportunities for accessing and engaging with thermal phenomena in a science center context. Practical considerations of the system for public exhibition spaces are also given attention.