Centuries before Berlin’s most notorious wall epitomized the Iron Curtain, another wall defined the cityscape. The Berlin Stadtmauer, or City Wall, was erected sometime during the 13th century as a defensive barrier to fortify the city. Spanning around 1.5 miles (2.5 kilometers), the wall encompassed Berlin’s medieval perimeters (an area which now includes the Alexanderplatz neighborhood), as well as its sister-city Cölln. However, the city of Berlin gradually extended past its medieval borders, absorbing neighboring Cölln and eventually transforming into an expansive metropolis. With the original city wall rendered useless,…
