The Avaz Twist Tower or ( also called ATT ) located in Marijin dvor , Sarajevo will be the new headquarter for Avaz , the most popular Bosnia and Herzegovina newspaper company .
The Avaz Twist Tower or ( also called ATT ) located in Marijin dvor , Sarajevo is the Balkan 's tallest tower . 
 It will be the new headquarter for Avaz , the most popular Bosnia and Herzegovina newspaper company .