This is the Landwehrkanal. It's a 6.6 miles (6.6 mi) long canal parallel to the Spree river in Berlin, Germany. It was constructed between 1845 and 1850 according to plans by Peter Joseph Lenné. It joins the upper part of the Spree at the Osthafen (Eastern Harbour) in Friedrichshain with its lower part in Charlottenburg, running through Kreuzberg and Tiergarten.
Lenné planned a canal with inclined walls, an average width of 66 ft at the surface and locks near both ends to control the water depth. In the course of two expansions (1883–1890 and 1936–1941), it reached a breadth of 22 m (72 ft) and a depth of 2 m (6.6 ft). Today the waterway is mainly used by tourist boats and pleasure craft. To learn more, pelase go here: https://en.wikipedia.org/wiki/Landwehr_Canal
