You might think swimming with sharks would be a tall order in a landlocked state like Colorado. But the Downtown Aquarium — housing more than a million gallons of water in the heart of the city — has you covered. For $185, certified scuba divers can sign up to plunge into the aquarium's "Sunken Shipwreck" exhibit and get up close and personal with several species of sharks, as well as sea turtles, guitarfish (which look kinda like a cross between a shark and a ray) and barracudas. As a bonus, the fee includes a "Dive With the Sharks" T-shirt and a free appetizer at the aquarium's restaurant. (The Downtown Aquarium is actually owned by Landry's Restaurants, which bought it in 2003.) Who needs an ocean when you can have complimentary beef sliders?