Dedicate your third day in Odaiba to exploring its rich history and culture. Start by visiting the Odaiba Museum of Maritime Science, where you can learn about Japan's maritime history and enjoy interactive exhibits. Next, head to the Museum of Emerging Science and Innovation, also known as Miraikan, which showcases cutting-edge technology and scientific advancements. In the afternoon, visit the Odaiba Gundam Base, a must-visit for anime and Gundam fans. End your day by enjoying a traditional Japanese tea ceremony at the Odaiba Seaside Park Tea House.