As nothing seems to be happening with this Guessathon I will tell: It is
The Fuji Television Building (Nearest monorail station: Odaiba-kaihinkoen)
Lit by lasers at night, the head office of Fuji Television is the landmark of Odaiba. The building was designed by Japanese Architect, Kenzo Tange. It's fully earthquake proof and took three years to build.
The ball on top of the building weighs a colossal one thousand two hundred tons! With a diameter of thirty two meters it was first constructed on the roof of the smaller building, then on April 17th 1995, using a special technique it was raised into position.
Inside there are ten studios. Tickets for a studio tour are available from the booth at the top of the escalator. The same ticket also gains you access to the inside of the ball. (Adults 500 yen, children 300 yen 10:00 am to 8:00pm daily).
Website:
www.fujitv.co.jp