Unter den Linden , which sits at the heart of the historic section of Berlin , developed from a bridle path laid out by Elector John George of Brandenburg in the 16th century to reach his hunting grounds in the Tiergarten .
Unter den Linden at the heart of the historic section of Berlin developed from a bridle path laid out by Elector John George of Brandenburg in the 16th century to reach his hunting grounds in the Tiergarten .