by the public, but "restroom" and "bathroom" are often used interchangeably for any room with a toilet (both in public and in private homes). "Restroom" is considered by some to be slightly more formal or polite. "Bathroom" is quite common in schools. "Comfort station" sometimes refers to a visitor welcome center such as those in national parks. The term restroom derived from the fact that in the early 1900s through to the middle of the century up-scale restaurants, theatres and performing facilities would often have comfortable chairs or sofas located within or in a room directly adjacent to the actual toilet and sink facilities, something which can be seen in some movies of the time period. An example of this is the description of a "movie palace" which was opening in 1921 which was described as including " ... a rest-room for the fair sex and a lounging room for the sterner sex ... off these rooms are the toilets." In Canadian English, public facilities are frequently called and signed as "washrooms", although usage varies regionally. The word "toilet" generally denotes the fixture itself rather than the room. The word "washroom" is rarely used to mean "utility room" or "mud room" as it is in some parts of the United States. "Bathroom" is generally used to refer to the room in a person's home that includes a bathtub or shower while a room with only a toilet and sink in a person's residence is typically called a "washroom" because you would wash your hands in it upon returning home or before a meal or a "powder room" because women would fix their make-up on their faces in that room. These terms are the terms typically used on floor plans for residences or other buildings. Real estate advertisements for residences often refer to "three-piece washrooms" (include a bathtub or shower) and "two-piece washrooms" (only toilet and sink). In public athletic or aquatic facilities, showers are available in locker rooms. In Britain, Australia, Hong Kong, Singapore, and New Zealand, the terms in use are "public toilet", "public lavatory" (abbreviated "lav"), "public convenience", and more informally, "public loo". As public toilets were traditionally signed as "gentlemen" or "ladies", the colloquial terms "the gents' room" and "the ladies' room", or simply "the gents" and "the ladies" are used to indicate the facilities themselves. The British Toilet Association, sponsor of the Loo of the Year