1. In 1882, the first train arrived in Flagstaff, Arizona, marking the completion of the Atlantic and Pacific Railroad.
2. The Navajo Code Talkers Monument was dedicated on August 12, 1989, in Window Rock, Arizona, to honor the Navajo servicemen who used their language as a code to transmit vital military messages during World War II.
3. On August 12, 1960, the Reid Park Zoo opened in Tucson, Arizona, featuring animals such as lions, tigers, and bears.
4. The Chiricahua National Monument in southeastern Arizona was established on August 12, 1924, to protect its unique geological formations and historical significance to the Apache people.
5. The Desert Botanical Garden in Phoenix, Arizona, was founded on August 12, 1939, to showcase the diverse flora of the Sonoran Desert region, including cacti and succulents.