Context What did the expansion of the London Underground, the world’s first underground railway which opened in 1863, look like? What about the transportation system in your home city? Citylines collects data on transportation lines across the world so you can answer questions like these and more. Content This dataset, originally shared and updated [here][1], includes transportation line data from a number of cities from around the world including London, Berlin, Mexico City, Barcelona, Washington D.C., and others covering many thousands of kilometers of lines. Inspiration You can explore geometries to generate maps and even see how lines have changed over time based on historical records. Want to include shapefiles with your analysis? Simply [publish a shapefile dataset here][2] and then [create a new kernel][3] (R or Python script/notebook), adding your shapefile as an additional datasource. [1]: http://www.citylines.co/data [2]: http://www.citylines.co/data [3]: https://www.kaggle.com/citylines/city-lines/kernels?modal=true