Archangels are the highest order of angels and number only seven. The four most often depicted in art are: Gabriel, the messenger of God who brought the announcement of Christ's birth to the Virgin Mary; Michael, the dispenser of justice; Raphael, the healer and protector of travellers; and Uriel, the angel of prophecy and wisdom.
They are depicted with wings and usually carry an attribute (see the entries for Saint Gabriel, Saint Michael, and Saint Raphael).