Views from the top of the stairs.
You can ascend the stairs as they stand in the erecting shop. They are secured. They don't have the concrete which will fill the tread pans - that will be done by the customer on site. But it doesn't take anything away from the marvel of ascending them and looking down at what has been created.
A closer look at the methods used in constructing and erecting the stairs.
Now you can see the completed stairs.
(flippant version!)