The great thing about concepts is you can dream up anything you want — even a yacht with a glass-bottom pool. That's what Feadship did when they designed the Project 3073. The 207-foot all-aluminum sports yacht features a sleek, elegant silhouette reminiscent of a luxury sports car. It's able to hit 30 knots thanks to a state-of-the-art propulsion system that utilizes water jets instead of propellers while an electric equivalent could reach up to 20 knots. Although the entire vessel is a gem, the crowning feature is the glass-bottom pool. Situated above the owner's stateroom, the glow from the water creates a unique ambiance on board.