A testament to old-school Vegas opulence, The Tank at the Golden Nugget belongs on every Sin City bucket list. Built into the center of the hotel pool, The Tank is a 200,000-gallon aquarium stocked with stingrays, hundreds of fish and six species of sharks. For an up-close look at these frightening fish, brave visitors can ride a three-story enclosed water slide running through the aquarium. Completely clear, it transports guests through the center of The Tank before depositing them into the pool. That's right — we're talking direct eye contact with carnivorous sea creatures.