We noticed this labyrinth in the garden of St Olave Hart Street (below) during our recent visit to London. Unlike a maze in which you can get lost, a labyrinth has one single path to follow. There are many turnings, but no forks.
Labyrinths became popular in the Middle Ages as a form of spiritual contemplation. They are sometimes described as being a miniature version of a pilgrimage, or alternatively a representation of our tortuous path through life.