ðə kˈɜːtən wˈɔːl ɪz bᵻlˈiːvd təbi wˈʌn ʌvðɪ ˈoʊldɪst stˈɪl ɹˈɛkəɡnˌaɪzəbəl ɪnðə nˈɛðɜːləndz, pˈɑːɹt ɪz hˈæzbiːn ˈɛkskəvˌeɪɾᵻd.
The curtain wall is believed to be one of the oldest still recognisable in the Netherlands, part is has been excavated.