1. German Architecture Museum List of German architects Timber framing World Heritage Sites in Germany Cologne Cathedral official website Banister Fletcher, A History of Architecture on the Comparative Method "Das Brandenburger Tor" (in German).

Кирпичная готика Везерский ренессанс Обрамление лесоматериалами Объекты Всемирного наследия в Германии Cologne Cathedral official website Banister Fletcher, A History of Architecture on the Comparative Method Das Brandenburger Tor (нем.).