1. In 1915, the Washington State Capitol Building, located in Olympia, was officially dedicated on August 15th, after five years of construction. The building, which features a distinctive dome, underwent a major renovation in the 1980s.

2. On August 15th, 1918, Seattle suffered a devastating fire that destroyed much of the city's downtown area. The fire, which burned for several hours, caused millions of dollars in damage and remains one of the largest fires in Seattle's history.

3. The iconic Space Needle in Seattle opened to the public on August 15th, 1962, in time for the city's World's Fair. The structure quickly became a symbol of Seattle and is now one of the city's most popular tourist attractions.

4. On August 15th, 1970, the first Seattle Hempfest was held in Gas Works Park. The event, which began as a small gathering of marijuana advocates, has since grown into one of the largest pro-cannabis events in the world, drawing tens of thousands of attendees each year.

5. In 2018, August 15th marked the start of a major wildfire season in Washington state. As the hot and dry summer weather persisted, wildfires broke out across the state, burning tens of thousands of acres of land and resulting in numerous evacuations and property damage.