This study explores the balance between connectivity and safety inurban tunnels, analysing their criminogenic characteristics usingGeographical Information Systems (GIS), regression models, andpolice data from Stockholm, Sweden. The findings reveal that 86%of police-recorded incidents in tunnels are concentrated in 2% ofthe tunnels, and these mostly involve vandalism. Inner-city tunnelsand those near metro stations are the most crime-prone, except forcycleway tunnels, while violence is concentrated in tunnels nearsports arenas. Designing short tunnels, encouraging communityparticipation in reporting criminal activities, and reinforcing maintenanceefforts are essential for promoting tunnel safety