English: The variable rise stairway in front of The Duomo or Cathedral, next to The Ducal Palace in Urbino, region Marche in Italy.
As seen from below (coming up the street), the stairway would appear wider than it is, since the lines of the decreasing rise of the stairs visually compress the stair's "horizon" (pushing it away from the observer).
Observe the size of the left and right sides' walls, how the architect has indicated the horizontal levels (top and bottom of left side correspond to top and "middle" of right side).