Japan has so many interesting museums, from Ramen to Gyoza museum, from Parasite to Dinosaur museum, and from Bandai to Ghibli museum. Regardless of your age and interests, you will be able to find some museums that are worth the visit. For Doraemon's fans, the Fujiko F Fujio Museum is definitely a place I would recommend.
The Fujiko F Fujio Museum, also known as Doraemon Museum, was first opened on September 3, 2011. The museum is still new and a bit small, but it has its own charm, especially if you're a big fan of Doraemon.