This example visualizes airline routes in the New York City area, displaying a bar chart of route counts per airline alongside a map of airports. The page uses D3.js to load and parse the `routes.csv` data, aggregate routes by airline, and render the two SVG charts. The layout is styled with CSS flexbox, while the SVG elements are given a thin black border. The code is structured for the React framework but currently uses raw JavaScript within an HTML page.