The first known European gambling house, not called a casino although meeting the modern definition, was the Ridotto, established in Venice, Italy, in 1638 by the Great Council of Venice to provide controlled gambling during the carnival season.
The first casino to be built on Highway 91 was the Pair-o-Dice Club in 1931, but the first full service casino-resort on what is currently called "The Strip" was the El Rancho Vegas, which opened with 63 bungalow hotel rooms on April 3, 1941.