This is the old City and County Building in Cheyenne Wyoming which, at one time, housed all of the offices of the City of Cheyenne and Laramie County, including the courts.
This building has been partially replaced by the Laramie County Government Complex, which physically adjoins it.
This Federal style Classical Revival building was built completed in 1919. A better view of the building would be from its front, rather than the sides as depicted, which would show its classic columns, but under the constraints of time when this photograph was taken, that couldn't be done.
