This interactive map of MIT’s campus visualizes building footprints from OpenStreetMap data, which is imported as TopoJSON and converted to GeoJSON features. Each building’s color is assigned using `d3.scaleOrdinal` with `d3.schemeCategory10`, based on its attribute tags. The view supports zoom and pan through `d3.zoom` and `d3.zoomIdentity`. Geometries are drawn as SVG paths using `d3.geoPath` with the `d3.geoMercator` projection, and the map automatically fits to the window size.