TenQ Space Museum

Fun limited-time exhibits, but pricey

The TenQ space museum is part of the Tokyo Dome City complex, and it's a fun spot to visit if you have children interested in all things space/the solar system – or if you are, too! They have a variety of exhibits, including fun limited-time only ones -- for instance, at the moment they have a Sanrio/Cinnamoroll themed space exhibition which is included in the main admission fee. In saying all that, I do think that price wise this isn't the most economical museum when compared to other science museums in Japan. Admission is 1800 yen for adults and 1200 yen for children over 4 to junior high age. I think there are better museums in Tokyo for a quarter of the cost, but it was still fun.