Amazon has proposed a new headquarters building for downtown Seattle - and it's pretty astounding.

The new design features three geodesic-style domes, which look like giant greenhouses.

Together with a pair of mirrored towers, the new HQ would total 3.3 million square feet of office space.

The designs are the work of NBBJ, and are intended to create a "natural parklike setting" for its employees in the centre of Seattle:

"The generative idea is that a plant-rich environment has many positive qualities that are not often found in a typical office setting. While the form of the building will be visually reminiscent of a greenhouse or conservatory, plant material will be selected for its ability to co-exist in a microclimate that also suits people."

The spheres themselves will be about 80-95 feet high, and feature central pillars covered in plants and trees.

Take a look at more images of the proposed design, which is still in the discussion stage, below.

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  • Amazon Proposes 'Greenhouse'

  • Amazon Proposes 'Greenhouse'

  • Amazon Proposes 'Greenhouse'

  • Amazon Proposes 'Greenhouse'

  • Amazon Proposes 'Greenhouse'

  • Amazon Proposes 'Greenhouse'

  • Amazon Proposes 'Greenhouse'

  • Amazon Proposes 'Greenhouse'

  • Amazon Proposes 'Greenhouse'

  • Amazon Proposes 'Greenhouse'

  • Amazon Proposes 'Greenhouse'

  • Inspiration Images