A casino (also called a gambling house or kasino) is an establishment that offers various types of gambling. Most casinos are combined with hotels, resorts or restaurants and some offer live entertainment. Some are also known for hosting special events like stand-up comedy shows or concerts. Casinos are often located in or near cities and are a popular destination for tourists.

When most people think of a casino, they envision the flashy glitz and decadence that typifies Las Vegas. But these behemoths of opulence aren’t just about the games: they’re designed to make you spend more, and crave coming back—even if you lose a lot of money. It’s a science, and casinos have studied and perfected the tricks that encourage us to gamble the night away.

From a maze of slot machines to a scented air that’s engineered to keep you feeling happy, these casinos use psychology to manipulate you into gambling your hard-earned dollars. One casino designer, Roger Thomas, created his own version of the classic casino, focusing less on slot machines and more on creating intimate spaces with beautiful decor to help people feel at home. This style, dubbed playground design, encourages people to stay longer and return—even if they’re losing money.

Casinos are becoming more and more palatial, with their five-star hotel rooms, Michelin star restaurants, and top-billed entertainment shows. Some even host sports betting, which has prompted some states to reconsider their anti-gambling laws. With all this extravagance, it’s no surprise that casinos are some of the largest buildings in the world.