What follows you around nearly everywhere but you never notice?
It may sound like a joke from a Christmas cracker but the answer is, of course, your shadow. Not only shadows of the human figure, but also shadows of trees, buildings and everyday objects surround us all the time — though we barely notice them.
The National Art Center, Tokyo's current exhibition, simply titled "Shadows," aims to encourage museum-goers to be more aware of shadows in art, and perhaps also in life, by exploring the work of 100 artists from different periods and cultures working in various media.