An interactive visualisation of cities' latitudes, inspired by Lisa Charlotte Rost's static version.
The upside: it works.
The downside: it's hastily cobbled together over the course of a few evenings, it's badly documented, you need to download half the internet to build it from source.
Clone, then npm install, then go and make a cup of tea, then npm run build.
Look for the output in the dist/ directory. You'll probably want to symlink src/index.html -> dist/index.html and src/data -> dist/data.
The source code is published under the terms of the MIT License.
The geo data is provided by GeoNames.org published under the terms of the Creative Commons Attribution 3.0 License.