Radiant Garden is a location from Kingdom Hearts 1, where Sora first meets Kairi and Riku. It's not a world you visit in Kingdom Hearts 2.
However, you do visit a related location:
* The World That Never Was is the final world in Kingdom Hearts 2. This world is heavily influenced by Radiant Garden, and you'll find familiar areas and characters.
If you're looking for a specific area in Radiant Garden, you might need to clarify your question. Perhaps you're looking for:
* A specific location within The World That Never Was that resembles Radiant Garden
* A specific event or character related to Radiant Garden that occurs in Kingdom Hearts 2
Let me know if you can give me more detail, and I can help you find the information you're looking for!