Machines Of The Isle, Nantes, France

The Marine Worlds will be a huge carrousel, rising nearly 25m high and measuring 20m in diameter. It will feature 35 moving underwater creatures on three levels: the ocean floor, the depths, and sea and boats. Visitors will be able to move about amidst a ballet of aquatic animals and sea carriages, as well as climb aboard and guide the movements of the Machines.
Slideshow : some pictures of the machines from the Carrousel being built (2010)
• The Heron Tree
The Heron Tree is a steel structure of 45 meters in diameter and 28 meters in height, topped with two herons. The project plans to allow visitors to climb either onto the back or onto the wings of the birds for a circular flight over the hanging gardens of the tree.