Boise
Boise is the capital of Idaho.
A tree-lined river city that became an important stop along the Oregon Trail.

What makes the capitol special
The Idaho State Capitol features a 208-foot dome which drew inspiration from St. Peter’s Basilica in Rome. The inside contains different types of marble from places like Georgia and Italy. Uniquely, it is the only state capitol in the U.S. heated by natural hot water pumped from 3,000 feet underground.
Three places to visit
- Old Idaho Penitentiary – Tour this historic former prison to get a fascinating look at over 100 years of Idaho history.
- The Basque Block – Visit this unique cultural neighborhood to experience Basque heritage through museums, markets, and authentic restaurants.
- Boise River Greenbelt – Enjoy a walk or bike ride on this scenic, tree-lined path that follows the river for 25 miles through the center of the city.
How the city got its name
Boise gets its name from the French word “boisé,” which means “wooded.” Fur trappers chose this name after finding a river lined with lush trees in a region that was otherwise very dry.


Why this city became the capital
Boise became the capital of Idaho in 1865, taking the title from Lewiston (1863-1865). The city was chosen because of its central location and its connection to the famous Oregon Trail. It also had a quickly growing population due to the Gold Rush.
From Celine Carlson’s 50 State Capitals: A Field Guide by a Girl Who Visited Them All, based on her visits to all 50 state capitals. About the author · Sources and research notes.