Odaiba is an entertainment hotspot with a giant ferris wheel, concert halls, amusement arcades and lots of shopping. It also boasts Oedo-onsen-monogatari, a hotspring that recreates old Edo-era ambiance and is very popular with foreign visitors. Shiodome has ultra-modern office buildings where you can often find restaurants with a great high-rise view of Tokyo. The neighboring area of Shinbashi is a district of much older commercial buildings and it's a great place to join 'salary men' enjoying a drink and snacks at street stalls under the railway bridges after work.