Beneath the flashing lights and free drinks, casinos are engineered to slowly bleed patrons of their cash. But savvy mathematically inclined minds have figured out ways to turn the tables—or at least make the odds more favorable to them.

Casinos often offer players comps, or complimentary gifts, such as rooms at their hotels, meals and show tickets. They may also give out limo service or airline tickets to big spenders. But players should always know how much they can afford to lose before they walk on the floor.

Some people gamble for fun and excitement, but others do so to relieve stress. Gambling can lead to addiction and can hurt a family’s financial security. It can also lead to problems with work and home life.

Most people are familiar with the Bellagio in Las Vegas, which has graced many movies and TV shows. But there are plenty of other famous casinos in cities around the world. Some are old and storied, while others are newer and more modern.

The elegant spa town of Baden-Baden first opened its doors to European royalty and aristocracy more than 150 years ago, but today its fabled casino is among the most luxurious in the world. Its red-and-gold poker rooms and plethora of blackjack and roulette tables are inspired by the baroque flourishes of the Palace of Versailles. It was once a favorite of German actress Marlene Dietrich and is now visited by a more diverse clientele.