The Old Idaho Penitentiary State Historic Site was a functional prison from 1872 to 1973 in the western United States, east of Boise, Idaho. The first building, also known as the Territorial Prison, was constructed in the Territory of Idaho in 1870; the territory was seven years old when the prison was built, a full […]

The Clark Fork, or the Clark Fork of the Columbia River, is a river in the U.S. states of Montana and Idaho, approximately 310 miles long. The largest river by volume in Montana, it drains an extensive region of the Rocky Mountains in western Montana and northern Idaho in the watershed of the Columbia River. […]

The City of Rocks National Reserve, also known as the Silent City of Rocks, is a United States National Reserve and state park in south-central Idaho, approximately 2 miles north of the border with Utah. It is widely known for its enormous granite rock formations and excellent rock climbing. The rock spires in the City […]

Shoshone Falls is a waterfall in the western United States, on the Snake River in south-central Idaho, approximately three miles northeast of the city of Twin Falls. Sometimes called the “Niagara of the West,” Shoshone Falls is 212 feet in height, 45 feet higher than Niagara Falls, and flows over a rim nearly one thousand […]

Craters of the Moon National Monument and Preserve is a U.S. national monument and national preserve in the Snake River Plain in central Idaho. It is along US 20, between the small towns of Arco and Carey, at an average elevation of 5,900 feet above sea level. The Monument was established on May 2, 1924. […]

Idaho (/ˈaɪdəhoʊ/ (listen) EYE-də-hoh) is a state in the Pacific Northwest region of the Western United States. To the north, it shares a small portion of the Canada–United States border with the province of British Columbia. It borders the states of Montana and Wyoming to the east, Nevada and Utah to the south, and Washington […]