The Orsoni furnace in Venice has been crafting colored glass mosaics for 135 years. Workers use techniques that have been passed down for four generations. Each piece of glass is handmade, and the works can be seen on buildings worldwide. Today, Orsoni is the last of its kind — the only historical furnace permitted to operate in the city of Venice. But finding the next generation is a struggle. So what does its future hold? We visited the artisan mosaic glass maker to find out how it is still standing. For more information, visit Orsoni's website: https://orsoni.com/