Mysterious Tower (KH:SoZ)

Mysterious Tower is a world in Kingdom Hearts II, Kingdom Hearts Birth by Sleep and Kingdom Hearts: Signs of Zodiac. It is the home of Master Yen Sid, and serves as a starting point for Sora and Mickey's quests in Kingdom Hearts II and Kingdom Hearts Birth by Sleep, respectively. Although it is considered part of Twilight Town in Kingdom Hearts II, like Dive to the Heart and Betwixt and Between, it is its own world.

Settings and Areas
The Tower is a surrealistic, crooked, golden-brown tower, loosely based on the setting of Fantasia's The Sorcerer's Apprentice. Though it appears to be missing several key structures from the movie, it appears that the segment is canon to the Kingdom Hearts storyline, and this tower is where it takes place.

The Tower is topped with blue cone-shaped turret roofs, decorated with moons and stars, similar to Yen Sid's hat. It rests on a floating island that contains a courtyard and many trees that obscure the rest of the Countryside from view.

You arrive outside of the tower at the Entrance. When you enter the tower you find yourself in the Hall, a simple round room with upward-spiraling and downward-spiraling staircase. When going upwards you'll go to the Staircase which eventually leads to Yen Sid's Study. Yen Sid's study is the largest room in the building, with several shelves containing many books, several about the exploits of King Mickey. There is a large wooden desk behind which Yen Sid sits, and behind it, large star and moon windows displaying the Countryside. When going downstairs in the Hall you first go to the Staircase again (this time going downwards) and arrive in the Basement Study. This is a darkened room with a table in the middle and against the wall a mirror covered by a cloth. Behind the cloth is the Magic Mirror.

After battling the Magic Mirror you can enter the Mirror World which is the same purple empty room as in Birth By Sleep. From there you can go to Bald Mountain where you can have the secret boss battle with Chernabog. Bald Mountain is a big black mountain, with Chernabog serving as its top. You can only Glide in this area, but when looking down a town can be seen.