1. Bellagio, Las Vegas, USA. Designed by legendary casino specialist Steve Wynn and built at a cost ofR$88 million, the Bellagio is justly among the world's most famous casinos, featured in Hollywood moves such as Ocean's 11 and 21.

Casino di Venezia is touted to be the world's oldest still active gambling establishment. Mauro Codussi was the architect of this casino that opened its doors for the first time in 1638. Interestingly enough, the building was a theatre and a part of it was reserved for gambling activities.