Bianco Hills is the first main stage of Super Mario Sunshine. Located at the base of Corona Mountain near the center of Isle Delfino, this area consists of a small village built near a long lake. This stage becomes available after defeating Shadow Mario during his first encounter with Mario, and it is accessed via a "Rainbow M" portal on the base of the Grand Pianta Statue in Delfino Plaza. "Bianco" is the Italian word for "white," ostensibly referring to the white stone that makes up the various structures, footpaths and rocky hillsides of the stage.
Mario typically enters this stage at a scenic overlook of Isle Delfino's southern coast, where a few of the game's other stages can be spotted from a distance. A stone footpath leads down the hill towards a narrow stream bordering Bianco Hills' quaint "Windmill Village". Two of the buildings here sport windmill blades on their roofs, which can be manipulated with F.L.U.D.D.'s Spray Nozzle. A tall white wall runs along one side of the village and features a waterwheel; several trees and a large lake are located on the wall's opposite side. The steep hillside above the village also contains a few platforms.
Continuing along the footpath past the wall eventually leads across a bridge hanging over the lake and towards a large windmill perched on a rocky island in the lake's far corner. Two small alcoves in the hillsides around the lake's perimeter lead to secret levels.
Several ropes are strung up between various buildings and platforms across Bianco Hills; Mario can use these ropes to cross wide gaps, or bounce off of them to jump much higher than normal.
Episode 1: Road to the Big Windmill
In this episode Mario must make his way from the start of the area, and through to the area of tall platforms, which has been covered in goop. At the point in the level just before the bridge towards the windmill, there is a polluted piranha plant which he must defeat to gain the shine sprite.
Episode 2: Down with Petey Piranha!
In this episode Mario must reach the roof of the windmill, where he finds Petey Piranha, an enormous humanoid piranha plant who smashes through the roof of the windmill and leaves him and Mario tumbling inside. Mario must them defeat him to complete the level.
Episode 3: The Hillside Cave Secret
In this episode Mario must make his way across the lake to a cave hidden in the sides of the hills. Within there is a secret area which he must complete to receive the shine sprite.
Episode 4: Red Coins of Windmill Village
This episode requires Mario to collect the 8 coins dotted around Windmill Village to gain the shine sprite.
Episode 5: Petey Piranha Strikes Back
Oddly seeming to parody the title of the movie Star Wars Episode V: The Empire Strikes back, in this episode Mario finds the whole of windmill village covered in goop. If he is able to make his way up the hills behind the village he can find a sleeping Petey Piranha who when awoken will begin terrorising the village. Defeating him will complete the level.
Episode 6: The Secret of the Dirty Lake
In this episode the lake in Bianco Hills can be found mysteriously polluted. If Mario manages to make his way across the lake to a hidden cave he can enter a secret zone and complete it to collect the shine sprite.
Episode 7: Shadow Mario on the Loose
In this episode Mario must chase Shadow Mario around Windmill village and defeat him to receive the shine sprite.
Episode 8: The Red Coins of the Lake
In this episode Mario must collect the 8 red coins scattered across the lake, mainly by using FLUDD to propel himself around on a lily pad to get to them.
Episode 9: Red Coins of the Hillside Cave
In this episode, Mario must revisit the cave from Episode 3, collecting 8 coins within.
Episode 10: Red Coins of the Dirty Lake
In this episode, Mario must revisit the cave from Episode 6, collecting 8 coins within.