Explore the world of data visualization through an Olympic medals project in this conference talk. Learn how to build functional client-side web applications using F# and Fable, the F# to JavaScript compiler. Discover the power of type providers in data handling, leverage functional types to model complex domains with minimal code, and understand how immutability and functional programming simplify interactive web application development. Gain insights into creating modifiable visualizations that allow users to interactively explore data and share their findings. Examine the source code behind online visualizations, identify data sources, and learn to reproduce and modify results. Drawing inspiration from Elm, uncover effective patterns for building robust web applications.