This study reports on experiences using fieldwork protocols (FPs) in guiding the inventory of safety conditions in public places. Relying on theories of environmental criminology, situational crime prevention, and crime prevention through environmental design (CPTED), FPs are used to collect data on-site for three different types of public places: subway stations, shopping centers and parks. The fieldwork data are compared with other data sources and mapped using geographical information system (GIS) technology or building information modeling (BIM). Based on criteria of validity, reliability, and generalizability of evidence collected on-site, the study shows that FPs are better suited for environments that follow some uniform structure (subway stations) than other types of public places (urban parks). The article concludes with lessons for using FPs in guiding data collection for safety inventories and recommendations for future research.