Cass Building

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Cass Building
455 Fort Street Detroit.JPG
General information
Architectural styleInternational Style
Location455 W. Fort Street
Detroit, Michigan
Coordinates42°19′43″N 83°03′05″W / 42.3286°N 83.0515°W / 42.3286; -83.0515Coordinates: 42°19′43″N 83°03′05″W / 42.3286°N 83.0515°W / 42.3286; -83.0515
Technical details
Floor count5
Design and construction
ArchitectSmith Hinchman & Grylls

The Cass Building is a low-rise office building at 455 West Fort Street, at the southeast corner of First Street, in Detroit, Michigan. It is also known as Detroit's Work Place.


The building was designed in 1910 by the architectural firm of Smith, Hinchman and Grylls as a warehouse on the western edge of the city's central business district. In 1972, the reinforced concrete building was purchased by the firm and remodeled as its new headquarters. The structure was stripped to its shell and new exterior walls constructed. The north and west facades were covered with tinted glass in a specially designed framing system that is almost invisible at first glance. The edges of the panes of glass comprise the wall abut giving the appearance of one sheet with no support. Four adjacent panes are fastened at their corners by an x-shaped bracket.[1]

The architectural firm relocated its offices in the early 1990s and the structure currently houses several employment agencies, daycare providers and Neighborhood Legal Services, which focus on meeting the needs of local Detroit residents.

Detroit People Mover Station Fort/Cass is one-block east across Fort Street from the building and Cobo Center is one block south.


  1. ^ Meyer, Katherine Mattingly and Martin C.P. McElroy with Introduction by W. Hawkins Ferry, Hon A.I.A. (1980). Detroit Architecture A.I.A. Guide Revised Edition. Wayne State University Press. ISBN 0-8143-1651-4.

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