Mario's Tower is the setting of the episode Mario's Challenge. Mario was waiting for the challengers at the top. The only character to reach the top of the tower was Shroomy.
Contestants
Frankie
E. Gadd
Meggy
Bowser
Toad
Toadette
Fishy Boopkins
Bob
Dr. Pootis
Shroomy (Winner)
Trivia
Two additional floors appeared in Mario's Extras.