1. On May 22, 1905, the Lewis and Clark Centennial Exposition opened in Portland, Oregon. The fair celebrated the 100th anniversary of the Lewis and Clark expedition and drew over 1.5 million visitors.

2. May 22, 1915 saw the official opening of Crater Lake National Park in southern Oregon. The park features the deep blue Crater Lake, which was formed by the collapse of a volcano.

3. On May 22, 1968, the Oregon Beach Bill was signed into law. The bill established public ownership of the state’s beaches, ensuring public access to the coastline.

4. The Oregon Ducks baseball team won their first ever Pac-10 championship on May 22, 2009. The team went on to play in the College World Series that year.

5. May 22, 2019 marked the 38th anniversary of the eruption of Mount St. Helens in southwestern Washington, which sent ash and debris raining down on Oregon communities. The eruption was one of the largest volcanic events in the continental United States.