Did you know that not all buildings with uneven levels in Amsterdam are slanting outwards, backwards or sideways because of the unstable swampy foundation? Some houses with leaning facades were built intentionally this way to make it easier to pull goods up the side of the house without smashing the windows.

A law in 1565 restricted the lean not to exceed a 1:25 incline to limit the risk of buildings collapsing into the street.