Steve Wynn built the Mirage in 1989, which, in effect, helped turn Las Vegas into pretty much a gambling town. Several decades later, casino resorts can now be found in almost every corner of the globe.

Casinos have already evolved from the first government-sanctioned gambling house in the 1630s to almost 400 years later, when it made its way to the United States and then to the rest of the world. A study by The Grand Sierra Resort in Reno projected the worldwide casino revenue to reach $3.4 billion in 2015.

But where did it all start?

According to The Grand Sierra Resort, the world’s first public and legal casino was built in Italy in 1638. Il Ridotto, found in the Venice’s San Moise Palace, had a strict dress code—gamblers were required to wear three-cornered hats and masks—and high stakes that kept many people out.