1. The Oregon Caves National Monument was established on June 24, 1909. Located in southern Oregon, the cave system is known for its rare geological formations and provides a unique opportunity for visitors to explore the underground world.

2. On June 24, 1933, the Tillamook Burn, a catastrophic wildfire that burned over 350,000 acres in northwest Oregon, was finally declared extinguished after raging for several days. The fire caused significant damage to the local timber industry and inspired a renewed focus on fire prevention and management in the region.

3. The Oregon State Fair was first held on June 24, 1862, in Salem, Oregon. The fair has grown in popularity over the years and now attracts over 250,000 visitors annually from across the state.

4. On June 24, 1984, the Oregon Brewers Festival was held for the first time in Portland, Oregon. The festival, which showcases the state's rich brewing heritage, has since become one of the largest and most renowned craft beer festivals in the country.

5. Oregon Governor Tom McCall signed the state's landmark Bottle Bill into law on June 24, 1971. The law, which requires a deposit on certain beverage containers to incentivize recycling, has been credited with significantly reducing litter and promoting environmental sustainability in the state.