1. On August 27, 1856, the steamship Uncle Sam ran aground on the Boise River and was destroyed. The ship had been brought to the area from the Columbia River to be used in mining operations but its fate proved to be unlucky.

2. In 1894, on August 27, President Grover Cleveland signed the Fivemile Pass Mining Act into law. The act allowed mining companies to explore and mine public lands in the United States that were not otherwise reserved for use by the government.

3. On August 27, 1918, the U.S. Army established the Craters of the Moon National Monument and Preserve in Idaho. The monument preserves a vast lava field that covers approximately 618 square miles and is considered one of the most unique and beautiful natural attractions in the country.

4. In 1963, on August 27, the University of Idaho football team played its first game in its newly constructed stadium. The stadium, located in Moscow, Idaho, was renamed the Kibbie Dome in honor of its main benefactor, William H. Kibbie.

5. On August 27, 1995, Idaho held its first-ever Gay Pride Parade in Boise. The parade was organized to raise awareness of LGBTQ+ issues and to celebrate the state's diverse, inclusive community. Today, the parade is an annual event that draws participants and supporters from all over the state and beyond.