A Rundgang could be two things:

1. a round hallway

      ________
       /        \  
      /          \ 
     /            | 
    ___________   | 
   /         \    / 
  /           \  /  
  |           | /   
  |           |/    
  \          /      
   \––––––––/       

2. a round walk or a "walk around"

  |––––<–––––––|  
  |            |  
  |            |  
  |   |–––|    |  
  v   |   |    ^  
  |   |___|    |  
  |            |  
  |––––––––>–––|