This laboratory activity gives an example of the creativity required when teaching non-native rock types. In order to study igneous and metamorphic rocks in central Florida (a huge area consisting solely of sedimentary rock), geology students examined building stones in downtown St. Petersburg. Each student picked a particular rock type used in a particular way (structure, decorative facade, etc.), performed geologic tests on it, read up on its properties, history, and uses, and prepared a paper on it. Part of the way through the project, the entire class held a walking tour, during which each students' building (and its stones) were visited, and the student studying that type of stone told the class what they had found out about it. Building on this context of use, this website describes learning goals, teaching notes and materials, methods of assessment, and additional reference and resource links for this field lab.