1. Nevada State Museum to open in 1917
June 23, 1917, marks the opening of the Nevada State Museum in Carson City, which houses artifacts and exhibits pertaining to the state's natural history, geology, and culture.

2. Hoover Dam construction begins in 1930
June 23, 1930, marks the beginning of the construction of the iconic Hoover Dam, which became one of the greatest engineering feats of the 20th century. The dam provided hydroelectric power to thousands of homes and helped to irrigate the surrounding desert.

3. Nevada Statehood Day
June 23 is celebrated as Nevada Statehood Day as it is the anniversary of Nevada becoming the 36th state in the United States in 1864.

4. Nevada legislature approves the divorce law
June 23, 1931, the Nevada Legislature approved a law making it easier for couples to obtain a divorce. It required just six weeks of residency in Nevada instead of six months, and no waiting period after filing for a divorce.

5. Helldorado Days begin in Las Vegas
June 23, 1948, marks the beginning of the annual Helldorado Days festival in Las Vegas, which celebrates the city's western heritage with parades, rodeos, and other events. The festival is still held every year in downtown Las Vegas.