The Foster gherkin tower - perhaps a more appropriate analogy would be to a barbershop sign, with its swirling, spiralling curvilinear appearance - prides itself on its sustainability.
As usual with low-energy commitments, many of the materials used were sourced from far and wide across the continent.
There's the glass from Austria, assembled in Switzerland, lifts from Finland, and steel from the low countries. At least the concrete was from the UK. Sadly, however, this last was the only thing that didn't arrive on time.