1. In 1925, the Oregon State Penitentiary was moved from Salem to its current location in Salem. This move was necessary due to overcrowding at the original location.

2. In 1957, the Portland Trail Blazers played their first NBA game against the Cincinnati Royals. The Blazers lost 118-116.

3. In 1978, the Oregon History Center opened in Portland. The center is dedicated to preserving and presenting the state's history.

4. In 1980, Mount St. Helens was officially declared a National Volcanic Monument. The mountain had erupted earlier that year, causing widespread damage and loss of life.

5. In 1996, the Oregon State Capitol underwent a major renovation, which included seismic upgrades, restoration of historical features, and the addition of new public spaces. The project cost over $70 million and was completed in 2002.