Gray Line Tours is awesome for seeing the Las Vegas icons (Hoover Dam, Lake Mead, the Strip) and they offer several options for the way you want to see them. You can ride in a super comfy 56-passenger coach or in luxury Mercedes Sprinter that seats 12. Also, you can upgrade your tour with helicopters, boats and planes - awesome ways to get different views. They've been around since 1912 for very simple reasons - great products, great service and great prices!