The Luxor in Las Vegas : the actual CITY of Luxor, Egypt : marshmallow fluff : fois gras. (We’re sure you knew that. We just enjoy analogies.) Sure, the hotel/casino in Vegas might have a beam of light visible from space, but we bet you'll find a hot-air balloon ride over the Valley of Kings much more illuminating. (Editor's note: Our list was compiled before political unrest prompted many countries to issue travel warnings for Egypt. If you're currently planning a trip to Egypt, please consider the risks and monitor your government's travel alerts.)