- Designated National Historical Landmark
- Largest and tallest Masonry Building in the world
- Largest Municipal Building in the United States
( larger than U.S. Capital)
- Most expensive Municipal Building in the United
States to build
- First occupant: Alexander Milne Calder - studio
in basement - 1875
- First Government office: State Supreme Court
- 1877
- Floorspace : 14.5 acres (630,000 sq. ft)
- Footprint: 4.5 acres (four city blocks)
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