If you or someone in your group aspires to be a doctor, ask about tours at Alfried Krupp Hospital Ruettenscheid. This place will offer an interesting look into the health world.
If you're making your way to Alfried Krupp Hospital Ruettenscheid in Ruettenscheid, leave time for other places too. After you've finished at this health care facility, Zollverein Coal Mine World Heritage Site isn't too far away and will keep you on the move for a bit longer.