Jim Czarny is correct.  The Pensacola Museum of Art utilizes a building
that was the former city jail (of the 1930s).  There has been extensive
remodeling of the interior, but they left a number of small rooms for
arts/crafts where the doors are bars...and the back staircase to the
second floor is CAST IRON.    One of the advantages to the building
(besides a central downtown location) is the unusually thick concrete
walls (which have been painted white) but which help control the environ-
ment.  They have formal museum AC but the walls help keep the place cool
and keep it warm, saving on constant AC/heading.   Here in Pensacola, our
Federal court building is housed in the "old Post Office" but this 5-story
structure from the 1930s/1940s was set up to house the Post Office on the
main floor (windows, tellers, mail drops, etc.) and the upper floors for
other Federal offices.   As the Post Office moved to more regional opera-
ations, the main floor offices were closed and reused for other things.
However, as you walk into the lobby, there are still vestiges of the old
brass bar windows, counter rails, etc.
 
Dean DeBolt, Special Collections
University of West Florida, Pensacola