The map displays beer reviews as colored dots overlaid on a world map, with each dot's hue indicating the review score on a red-to-green gradient. Users can pan and zoom interactively. The visualization uses the `d3.geoNaturalEarth1` projection and `d3.geoPath` to render country outlines and graticules, while `d3.zoom` and `d3.drag` handle navigation. Review data comes from the `@milepore/beer_ratings_and_locations` package, with scores mapped via `d3.scaleLinear`.