A Rundgang could be two things:

1. a round hallway

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

2. a round walk or a “walk around”

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