Just as I reported that this week a fun house will be released, it has been released by farmville.
You can find that in your market under building section.
The building requires more than 2 plot space horizontally and less than 2 plot space in vertically.
You need 18 of each bricks, boards and nails.
And the funhouse looks like this at various stage.
Go get yours as soon as possible.
For asking wooden board, nails and brick check this link
Now the building is just for decoration purpose and doesnt do any work.
You can store it as well after completing it.