A casino is a gambling establishment that offers a variety of games to its patrons, such as roulette, blackjack, and poker. They often have slot machines, sports betting, and other gaming options as well. The casinos also offer food and drink services. A casino can be found at places like hotels, resorts, and other tourist attractions.

Gambling has been a part of human society for millennia, with evidence of dice being used in China as early as 2300 BC. But the modern casino, with its glitzy decor and overflowing bars, has raised the game to an art form. And some casinos are truly colossal, with enough floor space to house entire cities.

The elegant spa town of Baden-Baden first became a playground for wealthy Europeans more than 150 years ago, drawing royalty and aristocracy from across the continent. Today, its casino reflects this legacy with red-and-gold tables and an extensive collection of slot machines—including the famous Megabucks.

Winstar World Casino in Oklahoma, home of Woody Guthrie and chicken fried steak, is often listed as the largest land-based casino in the world. However, the claim is misleading: Winstar counts the entire compound of its casino resort as a single entity and does not compare floor space dedicated to games of chance. This is why it takes third place on our list.