The Temenos piece of public art by Anish Kapoor at Middlehaven dock in Middlesbrough.
I'll put up a separate blog post about Temenos later, but for now count the doubles.
There is no doubting the double connection in the figureheads from the maritime museum at Tresco on the Isles of Scilly.
Or the trees in Tresco's Gardens.
Many more doubles at Carmi's thematic-photographic