When the etymology of "Berlin" is just not entirely apparent (the bear during the coat of arms is due to an comprehensible wrong assumption medieval German speakers built) it is likely linked to a Slavic word for swamp. So yes, Germany's capital was actually inbuilt a swamp. The year 1237 https://fake-euro-bills-in-berlin76430.yomoblog.com/32639005/the-definitive-guide-to-fake-euro-bills-in-berlin