'It all came crashing down at once': Watch moment Kumamoto Castle walls tumble

Bricks tumbled and a huge dust cloud rose from the walls of the 17th century-built Kumamoto Castle in the centre of the city on Tuesday. "It didn't fall down piece by piece, it all came crashing down at once", an eyewitness says. "It was really something." You can watch the moment the walls collapsed and footage of the aftermath in this short video. Parts of the castle were also damaged in the devastating earthquake in the area in 2016. To play this video you need to enable J