diff --git a/visualization/README.md b/visualization/README.md
new file mode 100644
index 0000000..8230e46
--- /dev/null
+++ b/visualization/README.md
@@ -0,0 +1,23 @@
+# Data Visualization
+
+## World Map
+
+It uses this javascript library: [StephanWagner/svgMap](https://github.com/StephanWagner/svgMap)
+
+Use:
+
+1. Download the free [IPInfo country database](https://ipinfo.io/products/free-ip-database)
+
+2. Generate the JSON file
+
+    ```bash
+    python3 world_map_data.py -f ~/Downloads/risk_ip4_med.json -c ~/Downloads/country_asn.mmdb
+    ```
+
+3. For testing - run the minimal python3 webserver to enable JS to access the JSON file:
+
+    ```bash
+    python3 world_map_test.py
+    ```
+
+4. Open the file in your browser: [http://localhost:8000/world_map.html](http://localhost:8000/world_map.html)