Spain is a well-known gambling location, with casino popularity rising steadily since gambling first became legal in 1977. The legal age to gamble is 18, and minors under this age are not allowed to enter casinos, slot machines parlors or bingo halls. There are approximately 40 casinos in Spain, the largest one is Casino de Barcelona located in the city of Barcelona, with 53 table games and 219 casino slot machines. You can find casinos in most major Spanish cities and many of the smaller cities offer at least one gambling facility as well. Be sure to check with the local gaming hall before you start placing bets to review regulations about collecting your winnings if you are not a resident of Spain.