Foldable stairs, doors and dungeon walls

I would like to let you know that a set of dungeon tiles and walls have been released for sale:

http://www.rpgnow.com/product/111689/Dungeon-Tiles-and-Walls?src=FrontPage

The set contains the following features:

1) Generic room tiles and tabs for connecting these tiles.
2) 3d pillars, walls, doors and stair that can be stored flat

Here are some photos:

In addition, I would share for free in the following link a fountain and some new walls that could be used with the above system.  (The fountain can be used in other systems as a standalone structure)

http://www.4shared.com/office/6aj9wJid/fountain_and_crypt_walls1.html