Throught funding from the National Park Service's American Battlefield Protection Program, geographic information technologies were employed to create a high resolution, spatially accurate representation of the 1775 landscape of Boston's Inner Harbor and to conduct a geospatial and temporal assessment of the location, extent, and preservation potential of an American Revolutionary War battlefield and its associated cultural resources. Geographic information technologies provide the tools and methodologies to accurately create digital representations of historical landscapes. These tools enable the visualization and geospatial analysis of landscaptes and significant historical events, greatly enhancing the understanding of temporal and spatial interacions between these events and the physical landscape upon which they occurred. Data sources include historical bibliographic and carthographic records, high resoluion orthophotographs, constant value rater grids, and LIDAR data. A military terrain model was created utilizing American Battlefield Protection Program's KOCOA system categories, in order to identify defining features of the battlefield. KOCOA is a acronym which stands for Key terrain, Obstacles, Cover and Concealment, Observation and Fields of Fire, and Avenues of Advancement and Withdrawal. The KOCOA analysis provides an established method for identifying critical defininf features of the battle and determining the influence of the landscape on the ephermeral battle events. The methodologies and indersciplinary approach will aslo be applicable to other investigations seeking to recreate historical landscapes within a geographic information system.