How can i find the world Position from a Child Object in a List?

Hey guys. I'm trying to build a Tower Defense Game. I have a Prefab including Tiles to build turrets on, a path for enemies and waypoints (Gameobjects) as Childs and when spawning, the waypoints are assigned into a List. Now, for testing, I want to spawn a block on one of the waypoints.

So im getting the highest index in the list but when I try to spawn it there, the block is spawned at the local position, not the world position. Everything i found online states that transform.position is ALWAYS the world position but it doesnt work for me.

     void Update()
     {
         if(Input.GetKeyDown(KeyCode.E))
         {
             tm.addLand(landprefab);
             Generate();
         }
         if(Input.GetKeyDown(KeyCode.R)) // thats the enemie spawning section.
         {
             Instantiate(enemie, tm.waypointList[tm.waypointList.Count - 1].transform.position, Quaternion.identity);
         }
     }