Murano Island

In 1291 the glass-makers left Venice and moved to Murano Island, because the furnaces they used were very large and posed a great fire hazard for the city. This was the theoretical reason. The real reason, however, was that the authorities wanted this unique, up to then, technique developed by those people to be the secret best kept from the eyes of the competition. Thus Murano Island very soon became the greatest industrial zone of the world.