1. On June 8, 1858, gold was discovered in the Colorado Territory, sparking the Pikes Peak Gold Rush. This led to a significant population increase and economic growth in the region.

2. In 1870, the Denver Pacific Railway completed its line to Cheyenne, Wyoming, connecting Denver to the Union Pacific Railroad and further advancing the state's transportation and commerce.

3. June 8, 1906, marked the opening of the Colorado State Capitol Building in Denver. The neoclassical-style structure with a central dome is now a prominent landmark in the city.

4. On this day in 1927, the Cherry Creek Dam was completed, creating Cherry Creek Reservoir and providing a critical source of water for the growing Denver metropolitan area.

5. In 1993, a massive hailstorm hit the Denver area on June 8, causing extensive damage to buildings, vehicles, and crops. The storm was declared a disaster and led to significant insurance claims and recovery efforts.