Pentalum is a celebration of the beauty of geometry and, in particular, of the pentagon and its derivatives. The luminaria have long used forms based on the Platonic solid, the dodecahedron, and the variants described by Archimedes.
Alan Parkinson favours these forms for their unsettling asymmetry that complements the sense of losing oneself.
The outer dodecahedral domes all have a seam motif based on the Schlegel diagram of a flattened dodecahedron, so that these domes become dodecahedrons within pentagons within dodecahedrons.
A ‘tree’ occupies the centre space and, in keeping with the theme, the tree is also 5-sided instead of the usual six-sided trees of previous structures.
An exception to the theme is the heptagonal Main Dome, which, in order to achieve more volume, has seven sides to sustain the desired asymmetry. This dome continues the research into the rendering of the muqarnas dome-like surfaces that are such a beautiful feature of Islamic architecture.
Standard plan & dimensions