1. On September 29, 1864, the Battle of Salt River Canyon took place between Apache warriors and United States Army troops. The battle resulted in a victory for the Apache, who were able to defend themselves in a mountainous terrain.

2. The Arizona State Fair, one of the largest state fairs in the United States, was founded on September 29, 1884. The fair has been held annually in Phoenix and attracts millions of visitors every year.

3. On September 29, 1917, the first-ever Grand Canyon National Park superintendent, Stephen Mather, took office. Mather was instrumental in promoting the park and oversaw the construction of many of its tourist facilities.

4. The Hoover Dam, one of the largest and most iconic dams in the world, began construction on September 29, 1930. Located on the Colorado River between Arizona and Nevada, the dam was completed in 1935 and provides hydroelectric power to millions of people in the region.

5. On September 29, 2001, the Arizona Cardinals played their first game at their new stadium, the University of Phoenix Stadium. The stadium, which has a retractable roof and seating for over 63,000 people, is home to the Cardinals as well as many other events and concerts throughout the year.