Gambling is the main draw of these ten temples of temptation, which house table games and slot machines in the heart of cities, resorts and other glamorous locales. While restaurants, free drinks and stage shows add to the allure, casinos would not exist without the games of chance that bring in billions of dollars in profits each year.

Slot machines and other electronic games account for most of the profits raked in by casinos worldwide, with blackjack, roulette, baccarat and craps also providing revenue. Casinos have a variety of ways to keep their patrons happy, from offering free food and drink to granting VIP players access to private tables.

There is something about gambling (maybe the large amounts of money involved) that encourages cheating and theft by both patrons and employees, but most casinos have a host of security measures to prevent these problems. The basics include video cameras that monitor all the activity inside and on the casino floor to make sure that things are happening as they should; dealers are trained to spot blatant cheating such as palming, marking or switching cards and dice; and table managers have a broader view of each game, monitoring betting patterns and alerting their bosses if anything looks amiss. In addition, most casinos use chips instead of real money to reduce the chances that a gambler will walk away with more than the casino can afford to lose. Some casinos even have ATMs on the premises to help guests withdraw cash.