When the Oakland City Hall was completed in 1914, it was the tallest building west of the Mississippi. Designed by the NYC-based firm of Henry Hornbostel and William Palmer, this grand Beaux Arts structure is located at 1 Frank H. Ogawa Plaza in downtown Oakland.
The building was badly damaged in the 1989 Loma Prieta earthquake, and then rehabbed and seismically retrofitted over a period of 6 years. Sidenote: I know the architect on that project.
A view of the public plaza, showing the decorative terrazzo installation:
The exterior is built using white granite and terra cotta. I’ve never been inside, but it’s apparently covered in black and white marble:
The bottom tier houses the mayor’s office, city council chamber, hearing rooms, and a police station. The second tier is a ten-story office tower, which includes an obsolete jail with an outdoor yard. The top tier is two-story tall podium with a clock tower on top: