Coleman A. Young Municipal Center, formerly the City-county building.
The building serves as both as county building and Detroit's city hall. Though most county offices have actually been moved to the Guardian Building, the Coleman Young Center still houses courthouses on floors 9 through 19 in the taller tower.
(my pic)
It was completed in 1954 and stood out as the first modernist skyscraper in Detroit's skyline.
http://dlxs.lib.wayne.edu/cgi/i/imag...-78892%5D78892
Also interesting is Macomb County's courthouse. It's the wide tower on the left. All 3 towers function a Macomb County government offices. The Art Deco tower to the right was built in 1944 and served as MC's courthouse until the modernist tower next to it was built in 1972. The glass tower in the back is an administrations building and was built in 1998. Pretty interesting mid-rises considering MC is the lesser populated county of Detroit's tri-county area.
Macomb County Government by
Eridony, on Flickr
Oakland County's Courthouse is a post-modern midrise. Sort of interesting how it's built like a typical suburban office but sorta resembles the traditional styles of a courthouse.
http://contractglaziers.com/portfolio/oaklandcourt/