1. In 1891, the first electric streetcar line began operating in Portland, Oregon on June 2. The electric streetcar replaced the previously used horse-drawn streetcars, which were slower and less reliable than their electric counterparts. The electric streetcar helped to modernize transportation in Portland and was a significant milestone in Oregon's transportation history.

2. On June 2, 1923, the Oregon Caves National Monument was established in the Siskiyou Mountains of southwestern Oregon. The monument covers over 4,500 acres and features extensive underground cave systems, beautiful hiking trails, and scenic forests. The Oregon Caves National Monument is a popular destination for tourists from around the world.

3. The city of Eugene, Oregon, was officially incorporated on June 2, 1862, making it one of the oldest cities in the state. Eugene is known for its beautiful parks, thriving arts scene, and commitment to sustainability. The city is home to the University of Oregon, which contributes significantly to Eugene's vibrant culture and economy.

4. On June 2, 1979, Mount St. Helens erupted, sending a massive plume of ash and debris into the atmosphere. The eruption was one of the most significant volcanic events in U.S. history and caused extensive damage to the surrounding landscape. Mount St. Helens is located in Skamania County, Washington, but the ash from the eruption also affected parts of Oregon.

5. In 1910, the first Oregon state park was established on June 2. Named Silver Falls State Park, the park covers over 9,000 acres and features numerous waterfalls, forests, and hiking trails. Silver Falls State Park is one of the most popular state parks in the country and is visited by millions of people each year.