Coin Heaven

Coin Heavens are special bonus areas that appear in many Super Mario games. They are located in the skies of several courses, and are usually accessed via hidden blocks or secret paths. These areas usually feature coins and sometimes extra power-up items that the player can collect. After players fully navigate through a Coin Heaven, they return to the main level.

Super Mario Bros.
In Super Mario Bros., Coin Heaven is accessed via a block holding a vine, which will pop up and rise into the sky, allowing the player to climb up into the area. There is a flat moving cloud platform that will ride the player across the area, allowing him to jump up and gather the coins before reaching the end.

In the challenge mode of the Super Mario Bros. Deluxe release, the player will earn a "Perfect Bonus" (10,000pts) upon collecting all coins in a Coin Heaven.

Super Mario Bros. 3
Coin Heaven returns in Super Mario Bros. 3, with several differences as far as appearances and accessibility. It is accessed by activating  a Magic Note Box, which has the distinction of a reddish color, as opposed to regular music note boxes. When you bounce on it, it will send the player to the Coin Heaven. The game will automatically scroll the screen through the area until reaching the end where there's a pipe that will take the player back to the main level.

In some Coin Heavens, if the player has the Super Leaf, Tanooki Suit, or better yet, the P-Wing, they can fly up and activate a hidden block that holds a 1-up Mushroom.

Also, the Coin Heavens in this game share the same music as the Sky Portion of World 5 - Sky Land.