Murano glass making dates back to the 7th century. It has been a tradition passed down from generation to generation, with each master possessing secrets no other knows. Glass makers were required to move to Murano in 1291 due to fear of Venice burning down, and by the 14th century their daughters were permitted to marry into wealthy families in Venice. These citizens were also not allowed to leave the Republic of Venice, and if they revealed professional secrets they were sentenced to death.
Over time the demand for the fine art has declined, and only about 1000 professional glass makers remain in Murano today. It is remarkable what these individuals can do with glass, and was interesting to see in person.