Many commercial buildings have (or once had) exterior stairwells or staircases.  Most need some type of enclosure.  Solutions have changed over the years; here are three different sets of stairs – each is an interesting survivor:

 

Sleek 60’s Aluminum

 

This short flight of steps is given stature with a vertical emphasis and sleek styling crafted in aluminum – c. 1960’s.

 

A very elegant interface between handrail and uprights.

 

Iron Stairwell – 2nd quarter of the 20th century

 

White paint makes the unusual design stand out.

 

Just as interesting from the other side!

 

A view inside.  Note the manhole cover beneath the first step!

 

And the underside!

 

70’s smoked plexiglass chic!

 

Smoked transparent panels with rounded aluminum frames… I miss the 70’s.

 

Descending to a basement level never felt so cool.