3.Staircase

This is a staircase. But I can’t see anyone using it. In the past there were only stairs to walk to the upstairs of buildings. Nowadays staircase is using only in an emergency moment or by a very few people.because every building has elevators and escalators. So no one wants to use the stairs. No one likes to waste their time and they don’t want to go on stairs very hardly. So now the staircase is only an antique thing that no one cares.