In this watercolour painting by JMW Turner, a luminous rainbow cuts through the sky, lighting up a church tower in the middle of the landscape scene. Behind the golden rainbow, the sky is full of blue and pink fluffy clouds. It is unclear whether the repetitious shapes in the foreground represent a field of tall grass or the rhythmic motion of waves on a seashore. In many cultures across the world, rainbows are a symbol of hope for better times to come.