1. Idaho Territory was established on February 5, 1863, by an act of the U.S. Congress. This made Idaho the 43rd state to join the Union on July 3, 1890.

2. The Idaho State Capitol building was completed on February 5, 1913, after four years of construction. The building is now a National Historic Landmark and serves as the seat of government for the state of Idaho.

3. On February 5, 1976, the "Sun Valley Serenade" was shown on national television for the first time. The film, which was partially filmed in Sun Valley, Idaho, is a romantic comedy that features figure skating and music performances.

4. The movie "My Own Private Idaho" premiered on February 5, 1991, at the Sundance Film Festival in Utah. Although the movie is set in Oregon, it features scenes filmed in the town of Ketchum, Idaho.

5. On February 5, 2005, the Sandpoint Long Bridge was reopened after a major renovation project. The bridge, which spans Lake Pend Oreille in northern Idaho, is the state's longest bridge and an important transportation link for the region.