WalletHub said Las Vegas is the best to visit this summer, with a score of 73.56 out of 100.The metropolitan area is one of the top tourist destinations in the world. The Strip, which is just over 4 miles long, is lined with elaborate themed hotels, luxury resorts and innumerable casinos.Cool off from the 100 degree heat in some of the world's greatest pools, like the one at MGM Grand.