pˈɑːɹts ʌvðə fˌɔːɹɾɪfɪkˈeɪʃən ʌv bɜːlˈɪn bˈɪlt ɪnðɪ ˈæftɚmˌæθ ʌvðə θˈɜːɾi jˈɪɹz wˈɔːɹ ðə bɚɹˈoʊk bɜːlˈɪn fˈɔːɹtɹəs wɜː lˈeɪɾɚɹ ˈɪntᵻɡɹˌeɪɾᵻd ˌɪntʊ ðə bˈuːlɪvˌɑːɹd ʌntˈɜː dˈɛn lˈɪndən wɛn ðə fˌɔːɹɾɪfɪkˈeɪʃənz hæd bɪkˌʌm jˈuːsləs θɹuː ðɪ ɐdvˈæns ʌv ɑːɹtˈɪlɚɹi pˈiːsᵻz.
Parts of the fortification of Berlin built in the aftermath of the Thirty Years' War (the baroque Berlin Fortress) were later integrated into the boulevard Unter den Linden when the fortifications had become useless through the advance of artillery pieces.