It contains a 24-floor four-and-a-half-star hotel, a 27,000 square foot spa/fitness center, an 18,000 square foot shopping area, and a 3,000 seat theater. Located on 101 MGM National Avenue in Oxon Hill, the MGM National Harbor is a vast resort complex that spans five city blocks. However, if you are dead set on playing hands of twenty-one at a physical venue, taking in a real-world casino atmosphere with all its hustle and bustle, here are the best spots in Maryland to do so. Naturally, though, a more accessible option would be to enjoy live croupier blackjack online. Since 2008, you can also find it in Maryland casinos. Though the origins of this exciting gambling game are a bit muddy, card historians tell us that it likely made its way onto US soil in the early-1800s. Its ruleset is super simple to master, and it has the lowest house edge (0.5%) of all the casino classics if you know how to use proper strategy. Without a doubt, blackjack is the most popular casino table game ever.