Inspired by the multitude of rivers that flow into the Kyoto basin, this landlocked aquarium fresh and salt water creatures alike. Holding 500 tons of water, the main pool is truly one of a kind. A horseshoe-shape pool gives you the illusion that you're swimming with sea lions. The penguins and dolphin stadium are also popular. It's inside Umekoji Park, a 15-minute walk west of Kyoto station.