Ślizgawka w Łazienkach (ang. Skating-rink in the Royal Baths) was one of, if not the first Polish motion picture in history, filmed sometime between the year 1894 and the year 1896 by Kazimierz Prószyński in Warsaw, using his newest invention - the pleograph.
The movie was (like all movies of this era) very short, and depicted people iceskating in Warsaw.
No copy of the movie, physical or not is known to exist, as it was either destroyed or lost completly. Only four pictures of this movie exist, along with few descriptions. Finding the whole movie is almost, or completly impossible at the moment.