Heritage Building Information Modeling (HBIM) focuses on the documentation and visualization of heritage properties which are confined in their permanent terrestrial space. This paper extended the concept of Heritage Building Information Modeling to the airspace above the sites. It presented a methodology for the 3D spatial visualisation of the aerial space controlled by anti-aircraft (AA) guns, taking into account the masking effects of the underlying terrain and the technological capabilities of the guns (rate of fire, projectile weight, etc.). The tool permits a nuanced analysis of the interplay between attacking aircraft and the siting of anti-aircraft guns and thus, allows for the analysis of the cultural landscape of World War II-era battle fields, which has to take into account the influence of aerial warfare. The applicability was illustrated by the case example of the Japanese WWII base on Kiska (Aleutian Islands).