5. Tusk Rio Casino Resort

5. Tusk Rio Casino Resort

Klerksdorp, South Africa

Square feet: 266,330
Gaming machines: 257
Table and poker games: 12
Restaurants and bars: 2
Hotel rooms:
Web site: riocasino.co.za

The largest casino in the Southern Hemisphere, the Tusk Rio was inspired by the passion, vibe, and color of the Carnival in Brazil's Rio de Janeiro. The casino is located a few hours by car from Johannesburg and is among the most popular casinos in South Africa.