In The - This (along with so many innumerable reasons) is why the rain forests are so important. We are destroying so much of our world that we could lose things like this in our lifetime. That's too fast for the Earth to compensate.
Art Nouveau Staircase by Victor Horta -Hotel Tassel, Brussels. Typically of this period the interior has elongated, curved and flowing lines. These lines are seen in the tiles, the staircase and also on the walls.