Wednesday, Nov. 19 is "World Toilet Day" and Berlin marked the occassion by placing 50 toilets outside its Central Station. The United Nations declared 2008 the "International Year of Sanitation" in order to draw attention to public health issues around the world. The average person in the West goes to the toilet between six and eight times a day, but around the world 2.5 billion people live without adequate sanitation, according to figures from the World Health Organization.