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The first level of the Eiffel Tower, Paris, France

 With the glass floor on the first level of the Eiffel Tower, visitors can stroll above the void and then explore two new pavilions and two pagodas with oblique facades. It was a challenge to build the first level, which stands 75 metres off the ground, while ensuring visitor safety and keeping the site open to the public. It was also a challenge to supply the worksite, striking a constant balance between loads of deconstructed materials to be removed and new construction materials to be brought in.

Solar, wind and rainwater

Four solar panels with a combined surface area of 10 sq. metres cover nearly 50% of the hot water needs of the Ferrié and Eiffel pavilions and a rainwater tank was placed below the Ferrié pavilion to supply the lavatories. Wind turbines were also installed on the technical roofs of the second-level Michelin-starred restaurant.