Iowa State CapitolSuspected

On the globe

Dated: Dated 1871–86
Declared purpose: Seat of the Iowa General Assembly
Today: Survives, still the capitol
Build time: About 15 years (1871–86)
Region: United States
Architect of record: John C. Cochrane, architect: about 35 when credited (1870, born 1835). Build time on record: about 15 years (1871–86).; Alfred H. Piquenard, architect: about 44 when credited (1870, born 1826). Build time on record: about 15 years (1871–86).All architects of record →
On the list as: Suspected

Why it's on the list

The record says the first foundation stone failed and was replaced; five domes, a plan found nowhere else in the US.

Hidden history

Found, Not Built

The only five-domed state capitol, with a central dome covered in gold leaf. It is credited to John C. Cochrane and Alfred H. Piquenard, the same pair as Illinois.

Five domes
No other US capitol has five. The question: why this layout, and where else does it appear?
The same team as Illinois
Cochrane and Piquenard are credited with both the Iowa and Illinois capitols, which went up at the same time.
First foundation failed
The record says the first foundation stone was rejected and replaced. Researchers ask what was found on the hill when they dug again.