Most feature an array of restaurants, including some of the best in the world, as well as state-of-the-art nightclubs, lounges, and bars. Most are casino hotels that offer up to thousands of rooms for not only gamesters but non-gamesters and families. OLBG curated a list of 10 of the most impressive and unique casinos around the globe. Online betting is creating rigorous competition, so casino owners have pivoted to building dazzling edifices that are architecturally unique and offer far more than slots and table games. Gambling has existed for millennia and the first casinos opened for business some four centuries ago.