Super Mario World/Yoshi's Island/Yoshi's House

Yoshi's House is the starting area of Super Mario World, and is located on Yoshi's Island. Unlike other areas, Yoshi's House is single-screen and entirely optional, and it has no time limit (the timer is always at 0).

Clearing the level
Simply walk off the screen in either direction.

Uses
There are a few purposes for visiting here, such as if Mario hits the Message Box without Yoshi, he gets the message saying that Yoshi is not home. If he hits the box while Yoshi is with him, the message becomes different. If Mario is Yoshi, he can have him eat berries; eating enough of them grants Yoshi an extra life.

Ending
One part of the ending scene takes place at Yoshi's House.

Trivia

 * There are little birds on the top of the trees that have the same colors of the game's four different Yoshis.