The central octagonal space is topped with a glass dome. The Milanese Galleria was larger in scale than its predecessors and was an important step in the evolution of the modern glazed and enclosed shopping mall, of which it was the direct progenitor.
It has inspired the use of the term galleria for many other shopping arcades and malls. The use of the iron structure has inspired also the Eiffel Tower, in Paris.
Galleria connects two of Milan's most famous landmarks: The Duomo and the Teatro Alla Scala, but the Galleria is a landmark on its own right. (text: Wikipedia)