What constitutes a landmark?

Also from the Examiner this morning, "For Joel Schechter of the Ocean Beach Historical Society, the Doggie Diner sign near the zoo is a cultural artifact that represents a lost era of The City's history, marked by a great oceanfront amusement park called Playland and a molded fiberglass dachshund's head."

"The Doggie Diner head, wearing a chef's hat and bow tie, symbolized a now-defunct restaurant chain, and it is beloved by tourists and locals. But does it deserve to be considered as a possible landmark?"