Swap - The Staircase

What do stairs, doors and windows have in common for me? They are all interesting architectural elements, to me at least.

I snapped up this interesting postcard featuring "The Staircase" by Monika Sosnowska in a recent tag game over on the PC Forum.  This staircase's prototypes are found in the artist's native Poland.  She gets a lot of her inspiration from the history and culture of her country.