The Laguna is a thriving wetland and an important element of African – Eurasian migratory flyway. Dotted with islands some of which are tiny with the mysterious ruins of ancient structures while others hold farms, villages, and cathedrals. Over centuries the islands have been used to grow food, defend against invaders, provide respite for the elites of the city, and to isolate hazardous activities like the blazing furnaces of Venice’s famous glass craftsmen. The Laguna, its many islands and the city Venice make up a UNESCO World Heritage Site.