Unter der Linden Street

, mistakenly referred to in-game as Unter der Linden Street, is a landmark exclusive to the PC version of Mario is Missing!. It is a boulevard in central Berlin. Prior to the events of the game, a Koopa Troopa steals a park bench, forcing the entire street to close down until Luigi returns the park bench. However, in order to prove the park bench's authenticity, he must answer two of the following trivia questions:
 * What did The Elector use the street for?
 * Jogging
 * Horseback riding
 * Racing
 * What kind of trees give the street its name?
 * Linden trees
 * Nut trees
 * Pear trees