The Mysterious Tower
The Tower is a place from Kingdom Hearts II.
Towering atop the island floating above the skies of Twilight Town, the surrealistic, crooked tower that Sora encounters early in his adventure is owned by master Yen Sid. On Sora's first journey up the tower, it is under attack by the Heartless. Later on, it is haunted by Nobodies.
Sora arrives to this tower through way of the 'Ghost Train', from Twilight Town. As they make their way towards the tower, they spot Pete loitering around the entrance. It seems that he has now sided with the Heartless. After a short cut scene, Sora, Donald, and Goofy, make their way up the tower, fighting various Heartless on the way.
Once they reach the top they confront Yen Sid, King Mickey's Master. Once introduced, Yen Sid explains the tough road Sora has awaiting him. After a long monologue from Yen Sid, Sora receives new garments from three fairy's. Once Sora, Donald, and Goofy have left, the three fairy's discover that Maleficent is still alive...
The tower itself is based on the setting of The Sorcerer's Apprentice from Fantasia.