This geospatial dataset depicts the authoritative locations of buildings and structures located on Department of Defense (DoD) sites (installations, ranges, and training areas) worldwide. This dataset was created from source data provided by the active, guard, and reserve components of the Army, Navy, Marine Corps, Air Force, and Washington Headquarters Services headquarters and was compiled by the Defense Installation Spatial Data Infrastructure (DISDI) Program, within the Office of the Assistant Secretary of Defense for Energy, Installations, and Environment, Business Systems and Information. A building is defined as a roofed and walled area that is completely enclosed except for entry-ways, contains one or more spaces that are capable of sustaining human presence, and has no component intended for mobility. This dataset does not necessarily represent a comprehensive collection of all Department of Defense facilities, buildings and structures. In some cases, buildings and structures are included which are outside DoD site boundaries. This does not imply DoD interest or control of such buildings, it is only an artifact of the data collection process.