Train In The City, Brno, Czech Republic

The etymology of the name Brno is disputed. It most likely comes from Old Czech brnen, brno 'muddy, swampy.' Alternative explanations derive it from a Slavic verb brniti (to armor or to fortify) or a Celtic language spoken in the area before it was overrun by Slavic and Germanic peoples (this theory would make it cognate with other Celtic words for hill, such as the Welsh word bryn). Throughout its history, Brno's locals also used to refer to the town in other languages, including Brünn in German, ברין in Yiddish and Bruna in Latin.
Brno as such was acknowledged to be a town in 1243 by Václav I, King of Bohemia, but the area itself had been settled since the 5th century. From the 11th century, a castle of the governing Přemyslid dynasty stood here, and was the seat of the non-ruling prince.