- britannica.com Cities & Towns Cities & Towns C-GFirst mentioned as Throtmanni in 885, Dortmund became a free imperial city in 1220 and later joined the Hanseatic League.
- 9lifehack.com project-old-synagogue-alte-synagoge…Dortmund's old synagogue was built in 1900 and destroyed in 1938. With 1200 seats, it was one of Europe's largest, and also one of the most beautiful of its time.
- wikikuz.icu wiki/Old_Synagogue_(Dortmund)Eski sinagog (Dortmund) - Old Synagogue (Dortmund). Dortmunddagi ibodatxona, Shimoliy Reyn-Vestfaliya, Germaniya.
- kk.wikisko.ru wiki/Old_Synagogue_(Dortmund)
- wikiple.ru wiki/Old_Synagogue_(Dortmund)
- hmn.wiki bg/Old_Synagogue_(Dortmund)
- wiki5.ru wiki/Old_Synagogue_(Dortmund)
- uk.wikidea.ru wiki/Old_Synagogue_(Dortmund)
- iiwiki.ru wiki/Old_Synagogue_(Dortmund)
- tu-dortmund.de en/campus/accommodation/