Sora goes to a lot of different worlds in his journey and most of them are Disney worlds. Here is a list of the worlds in Kingdom Hearts 1.

Destiny Island (Sora's home island)

The Jungle (Tarzan's home)

Wonderland (Alice is here)

Traverse Town (A world full of Final Fantasy characters)

Halloween Town (Jack Skellington is here)

The Olympic Coliseum (Hercules fights here and so will you)

Atlantica (The Little Mermaid)

Disney Castle (King Mickey lives here)

Monstro (pinocchio!!)

Agrabah (Aladdin)

Never Land (Peter Pan)

Hundred Acre Wood (Winnie the Pooh)