1. On June 1, 2006, the city of Las Vegas celebrated its 100th birthday. The city was officially established on May 15, 1905, but it wasn't until June 1 that the first lots were sold at auction, marking the start of the city's growth.

2. June 1, 2011, was a historic day for Nevada as the state became the seventh in the US to legalize online gambling. The bill was signed into law by Governor Brian Sandoval, paving the way for online poker and other casino games to be offered to residents and visitors.

3. On June 1, 1980, the iconic MGM Grand hotel in Las Vegas was devastated by a fire that claimed 85 lives and injured more than 700 people. The tragedy was a wake-up call for the hotel industry and led to sweeping changes in fire safety regulations.

4. Reno, Nevada, saw a dramatic event on June 1, 1962, when actor Jayne Mansfield's car collided with a tractor-trailer on a foggy stretch of highway outside the city. Mansfield was killed instantly, along with two of her passengers, in a gruesome accident that stunned the world.

5. On June 1, 2002, Lake Tahoe played host to a unique event when a group of people attempted to break the world record for "human dominoes." Nearly 5,000 people linked arms and tumbled over in unison, creating a chain reaction that covered more than one mile of beach. Although falling just short of the record, the event was a huge success and raised more than $50,000 for charity.