1. In 1910, a massive wildfire known as the "Big Blowup" began in northern Idaho, quickly spreading and ultimately destroying over 3 million acres of forest. This event led to important changes in forest management and fire prevention practices.

2. On May 26, 1969, a magnitude 6.0 earthquake struck the Challis area of central Idaho, causing significant damage and multiple fatalities. This event highlighted the need for improved seismic building codes and earthquake preparedness measures.

3. In 1892, the town of Wallace, Idaho was officially incorporated. This town, located in the northern panhandle of the state, played an important role in the region's mining history and continues to attract visitors with its historic buildings, museums, and outdoor recreation opportunities.

4. On May 26, 1933, the Idaho State Penitentiary, located near Boise, experienced a major riot that resulted in multiple deaths and extensive damage to the facility. The riot led to important reforms in the state's prison system, including improved facilities and conditions for inmates.

5. In 1959, the United States Army Corps of Engineers began construction on the Minidoka Dam, located on the Snake River in south-central Idaho. The dam, completed in 1961, provides important irrigation and flood control benefits for the surrounding agricultural region.