The Danube and Rhine rivers.
        
                    
             
        
        
        
A kiva is a room used by Puebloans for religious rituals and political meetings, many of them associated with the kachina belief system. Among the modern Hopi and most other Pueblo people, kivas are square-walled and underground, and are used for spiritual ceremonies
-From Wikipedia
https://en.wikipedia.org/wiki/Kiva
 
        
                    
             
        
        
        
Ellis island was originally built and opened as an immigration station.
        
             
        
        
        
(#7)A.
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