This circular packing chart visualizes Airbnb NYC listings, hierarchically nested by borough, neighborhood, and room type. The code uses d3.hierarchy, d3.pack, and d3.scaleOrdinal with d3.schemeSet3 to structure and color the data from AB_NYC_2019.csv. Interactive zooming via d3.transition and interpolateZoom allows navigation through the nested circles, while hover tooltips display the full path and listing count. Labels fade in and out during zoom transitions, and a legend identifies the three hierarchical levels.