Tokyo Character Street

Tomica cars and Plarail trains that pop out on a 3D screen, digital mini games, and a super-size Plarail diorama out front.

Tiny cars everywhere, plus store exclusives for a vehicle-obsessed child.

Japanese-style rooms, and connecting rooms for up to six with two bathrooms and an inner door you can close at night, a five-minute walk from the station.

Shelves deep in picture books and children's books, with original picture-book artwork always up on the walls.

Minerals, fossils, animal specimens and century-old university furniture from the University of Tokyo's collections, plus a small chamber of curiosities.

Free, with Japan's money shown in order through its history and a corner where you feel how heavy 100 million yen in bills is.