This bar chart displays the number of movies released per decade from the IMDB Top 1000 dataset, with hover tooltips revealing the decade's exact count and top-rated film. The visualization uses d3's `scaleBand`, `scaleLinear`, `axisBottom`, and `axisLeft` to render the axes and bars, with a custom tooltip div for interaction. Data is aggregated in `index.js` by filtering on `Released_Year` and grouping into decades, while the `viz.js` component handles all SVG drawing and styling.