Oxford Botanic Garden is a very special place and one that holds an important position in my personal journey as a scientist and teacher (see, for instance, these old posts: The Walls of the Garden and A giant falls: the Tolkien tree is no more).

Some years ago the Garden refurbished its Fernery (a glasshouse devoted to humidity-loving ferns and their relatives) and as part of the design installed a stone floor centered on an old outlet both aesthetically and topographically – the floor level slopes inwards from all sides to allow water to flow into the drain.  It’s a nice confluence of design and practicality using, of course, a spiral.

That’s the seventh in my Spiral Sunday series; more next week.