Very nice and informative place to be with kids.

• First of all the entry fee was so cheap in Tokyo standards for the service. It was ~¥800/- for adults and ~¥400/- for kids roughly.
• They have display of quite a lot of science and technology organized systematically.
• The planetarium show explains quite a lot about solar system, stars, constellations, galaxies, galaxy structures and universe. There is no special fee to attend the show which was quite amazing.
• There are scientific experiments demonstrated at various places.

The facility is located very close to imperial palace and near to the art museum too. In short I strongly recommend you guys to make a visit.

NB.

• Try to use public transport as it’s in the center of city, parking can be quite expensive and at times you may find difficulties to get a parking lot in a busy day.
• Explanation in English language was very limited. So, you may need to have reasonably good skill in Japanese to enjoy the place full. But there are shows and sections that are self explanatory by nature which is still worth for folks who don’t have great Japanese proficiency.