Odessa
The "Potemkin Stairs", originally called the "Primorsky Stairs", is a giant stairway in Odessa in the Ukraine. Odessa sits on a high plateau and the stairs give access to the harbour. The stairs are wider at the bottom than at the top which gives the impression, looking up, that the flight is long and the opposite when looking down. From the top only the landings are visible, and not the steps, but a person looking up sees only steps, and the landings are invisible.