1. In 1868, the first train from the Transcontinental Railroad arrived in Utah, marking the completion of the railroad across the United States.

2. In 1894, the LDS Church dedicated the Salt Lake Temple in a three-day ceremony, marking the culmination of 40 years of construction.

3. In 1938, the first air-conditioned building in Utah was dedicated at the University of Utah. The building, called the George Thomas Library, provided relief from the sweltering summer heat.

4. June 25, 1942, marked the beginning of the Topaz War Relocation Center, a Japanese internment camp located in Millard County, Utah. Over 11,000 Japanese Americans were forced to live at the site during World War II.

5. In 1999, snowboarder and Utah resident Ross Rebagliati became the first Olympic gold medalist in the sport of snowboarding at the Winter Olympics in Nagano, Japan. Rebagliati's title briefly became controversial when he tested positive for marijuana, but he was eventually allowed to keep his medal.