The southern galaxy NGC 4622 is a rare example of a spiral with two sets of spiral arms winding in opposite senses : a single inner arm which opens counterclockwise, and two outer arms which open clockwise. The two sets of arms are linked by a nearly circular, off-centered inner ring of high contrast, and the presence of the two opposing senses means that NGC 4622 has at least one leading spiral arm, a phenomenon that up until now has never been firmly established in any galaxy. Here, some of the basic morphologic and photometric properties of this galaxy, which has recently been suggested to have experienced a retrograde tidal encounter, are described