In this inland sea that has continuously been under threat, rises amid a tiny archipelago at the very edge of the waves one of the most extraordinary built-up areas of the Middle Ages. From Torcello to the north to Chioggia to the south, almost every small island had its own settlement, town, fishing village and artisan village (Murano). However, at the heart of the lagoon, Venice itself stood as one of the greatest capitals in the medieval world. When a group of tiny islands were consolidated and merged into one, nothing remained of the primitive topography but what became canals, such as the Giudecca Canal, St Mark’s Canal and the Great Canal, and a network of small rii that are the veritable arteries of a city on water. In this unreal space, where there is no notion of the concept of terra firma, masterpieces of one of the most extraordinary architectural museums on Earth have been accumulated for over 1,000 years.