Odaiba (お台場) is an artificial island connected to the city via Rainbow bridge – a bridge that is lit up at night in the colors of a rainbow (duh). Its offers are centered around entertainment: Gundam statue, ferris wheel, museums, parks and gaming centers are all located here.
As the old capital, Kyoto (京都) has tons of cultural gems to offer – palaces, mansions, former geisha districts and tons of cute little alleyways.
Osaka (大阪) is a perfect blend of old and new; from the castle sitting on a fortified island to quirky Dotonbori area bursting with street vendors and restaurants. Don’t miss out on the billboards at night.