Image: YouTube, Tom Scott
In Helensburgh in Scotland, famous designer Charles Rennie Mackintosh built his showcase Hill House in 1904. A weaker Portland cement was used in the construction and is now unfortunately crumbling after over 100 years of exposure to one of the wettest regions of Scotland. To preserve the house and protect it from the rain, The National Trust has built a massive chain mail box over the house which will keep it dry but also ventilated. The box includes 32.4 million hand sewn steel rings! Check out Tom Scott's great video about The Hill House Box.