Update README.md

Author: loreabad6

README.md

@@ -11,6 +11,24 @@ The SDSL workshops aim to identify commonalities and differences between spatial
 to bridge language barriers and to bring the different communities together to discuss, cooperate, and
 synchronise the development efforts. 
 
+
+<p align="center">
+  <a href="https://r-spatial.org/sdsl/">
+    <img src="https://upload.wikimedia.org/wikipedia/commons/1/11/M%C3%BCnster_-_Prinzipalmarkt_-_Lambertikirche.jpg" width="350px" height="231px" style="border-radius: 50%;"/>
+  </a>
+  <br>SDSL 2023 - Münster, Germany
+  <br>
+  <a href="https://spatial-data-science.github.io/2024/">
+    <img src="https://2.bp.blogspot.com/-gTgu91_IRFE/VBPLT1anHTI/AAAAAAAAAos/El9BtKkjSxc/s1600/prague.jpg" width="350px" style="border-radius: 50%;"/>
+  </a>
+  <br>SDSL 2024 - Prague, Czechia
+  <br>
+  <a href="https://spatial-data-science.github.io/2025/">
+    <img src="https://live.staticflickr.com/2102/2244371174_7951529cb9.jpg" width="350px" style="border-radius: 50%;"/>
+  </a>
+  <br>SDSL 2025 - Salzburg, Austria
+</p>
+
 ## Discord 
 
 SDSL has a Discord server for discussions and communication during the workshops. Please join via <https://discord.gg/HJRKEJsmrr>.