The Potemkin Staircase, designed in 1825 by architects Avraam Melnikov, Francesco Boffo and Potier, and erected 15 years later, according to the plan of its creators, was to combine the blue of the sea and sky to provide Odessa, which is located on a hill, with access to the port. The creation of the architects numbered exactly 200 steps, consisted of 10 spans, and was built so that the base of the staircase significantly exceeded its upper part in width. As a result of using this trick, when looking at this architectural masterpiece from top to bottom, the usual illusion of narrowing is not created, and if you look at the stairs from below, then its steps (the landing areas are not visible) seem simply endless.