Video by Andy Boreham. Subtitles by Wang Xinzhou and Andy Boreham. Drone footage by Zhou Shengjie.

In Hongkou District, nestled to the north of Shanghai's famous Pudong skyline, is an area covering roughly 2 square kilometers that for thousands of Jewish refugees was once home. 

Living there during World War II wasn't always pleasant, especially as sometimes up to 30 crammed into small rooms meant for just a few, but this area helped save 18,000 European Jews from persecution during one of the most hideous periods of recent history.

Check out the video above as Andy Boreham visits the area and learns for himself what life was like there between 1933 and 1941.