This scatter plot compares visitor numbers at tourist locations between 2019 and 2021. Each dot represents a place, with its position determined by the number of visitors in each year. The visualization uses D3.js v7, loading CSV data from a remote gist URL. It renders as an SVG using `d3.select`, `d3.scaleLinear`, `d3.axisBottom`, and `d3.axisLeft`, with circles positioned via the `x` and `y` scales.