Inspired by the model of the ancient Greek meeting place, the Agora is a vaulted, modular structure of light steel, which runs in an arc along the northern edge of the Common Domain, alongside a dual band of water and trees. Enclosing a pedestrian arcade of some 18.600 m2 (200.000 sf), the Agora provides a pleasantly shady shelter, with fresh air, for the path and facilities within.
The Nations Wall is a sculpture made of tubular steel. Designed so that it can move mechanically in a wavelike motion, the monumental sculpture is 250m (820ft) long by 20m (66ft). It is designed so that it could serve as a giant screen for projections.