The AquaTheater is an exclusive feature found only on Royal Caribbean's Oasis Class ships. This includes the Oasis of the Seas, Allure of the Seas, Harmony of the Seas, Symphony of the Seas, Wonder of the Seas, and Utopia of the Seas. The AquaTheater is a massive, outdoor amphitheater located at the very back (stern) of the ship, featuring a deep-water pool that serves as a stage for high-diving, synchronized swimming, and aerial acrobatics. Guests can watch world-class athletes perform death-defying stunts against the backdrop of the open ocean. In 2026, these shows remain some of the most popular entertainment offerings at sea, often requiring advanced reservations via the cruise app. For a truly unique experience, guests can book AquaTheater Suites, which feature massive "wrap-around" balconies that overlook the theater, providing a private, front-row seat to every performance. While Royal Caribbean's newer "Icon Class" ships feature a similar concept called the "AquaDome," the classic, open-air "AquaTheater" remains the signature landmark of the record-breaking Oasis Class fleet.