The Sky Pavilion (Japanese: スカイガーデンSky Garden) is the final area the player arrives at in the game PokéPark Wii: Pikachu's Adventure. It's an ancient ruin floating high above the PokéPark and serves to keep the ties of friendship strong for everyone in the park.
Finally arriving to the Sky Pavilion, the team sets out to search for Mew and restore the Sky Prism to its original shape. After searching high and low, Piplup tells the player that he hasn't seen Mew anywhere. Returning to the balloon reveals that Piplup never left the balloon's side. He tells the player to go investigate the second Piplup who turns out to be Mew in disguise.
Mew then challenges the player to a skill game to prove themselves. It starts with a pedestal rising from the pool as well as shorter pillars. The player must obstacle hop from pillar to pillar until they reach the pedestal where Mew awaits. Mew then challenges the player to a battle, transforming into Magmortar, Garchomp, and then Tyranitar before accepting defeat. Finally, Mew challenges the player to a chase. Once this skill game is done, Mew considers the player its friend and helps the player in restoring the Sky Prism, restoring peace in the PokéPark.
Spoilers end here.
This is a list of all the Pokémon that can be befriended in the Sky Pavilion.