Kokyogaien National Park
All the year around many tourists start their Tokyo tour from this place, a gateway of Tokyo. This is a Edo Castle special historic site so you can find great historic landmarks. The nature in and around the park is well preserved so that you can also enjoy the seasonal scenery.
2-minute walk from Tokyo Metro Chiyoda Line, Nijūbashimae Station B6 exit/2 minutes walk from Tokyo Metro Hibiya Line, Hibiya station, B6 or 2 exit