A new exhibition hall at the World Expo Museum will open tomorrow.

Cloud Hall on the former Puxi site of the World Expo 2010 will have rooftop gardens, temporary exhibition rooms and a public services area for lectures and other public events, according to the museum.

The hall contains 3,730 pieces of glass and three main poles. The hall made its debut yesterday with a public forum about the history of World Expos and how they can change people’s lives.