13 geotagged Bay Area POIs from the original photos.kml — community colleges, gas stations, malls, parks, restaurants, theaters. Click a node to see a building-footprint thumbnail from OpenStreetMap, the category, and a Street View link. Click anywhere else on the map to find the 4 nearest. Toggle the convex hull and density layers via the panel. Same dataset and queries as the HW3 PostGIS exercise — but client-side via turf.js, no server.