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Ada County, Idaho Landmarks

The landmarks listed below are located in Ada County, Idaho.

Idaho State Capitol

Idaho State Capitol

Boise, Ada County, Idaho, 83702
The sandstone and marble Capitol was completed in 1920. The design of the building was designed to look like the U.S. Capitol in Washington,D.C. Local sandstone from east Boise's Tablerock Quarry was used as well as convict labor.

Old Idaho State Penitentiary

Old Idaho State Penitentiary

Boise, Ada County, Idaho, 83712
The Old Idaho State Penitentiary was a functional prison from 1872 to 1973. The first building, also known as the Territorial Prison, was constructed in the Territory of Idaho in 1870.

Top 3 Most Popular Ada County Landmarks

  1. Idaho State Capitol
  2. Old Idaho State Penitentiary
  3. Congregation Ahavath Beth Israel Synagogue

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