For sceptics, angels may be no more than metaphors: poetic devices to convey, at least for those with a religious sensibility, an active divine interest in creation. But for others, angels are absolutely real creatures: manifestations of cosmic power with the capacity either to enlighten or annihilate those whose awestruck paths they cross.

From biblical cherubim to Wim Wenders' Wings of Desire, a tantalising glimpse of the role of angels throughout history.