A bronze fountain by Reinhold Begas. It was erected in 1891 as a present from the city of Berlin to the Kaiser. Neptune, trident in hand, presides over the square supported by sea-nymphs with webbed feet carrying him on a seashell. Denizens of the deep (a seal, an alligator, snakes and turtles, among others) spray water at him in homage while languishing mermaids pour water into the fountain, clutching sea-nets overflowing with marine bounty.