Intermediatheque

A huge bookstore with a strong children's section, useful for picture books, stationery and a quiet reset near the station.

Dozens of character shops sit along one underground hallway, so everyone can find their favorite without crossing the city.

Especially handy for larger families because connecting rooms are a real option, and being five minutes from Tokyo Station makes travel days much easier.

Free and very hands on, with police vehicles, uniforms and interactive exhibits that younger kids tend to love.

One of the biggest Sanrio shops around, with an overwhelming amount of Hello Kitty and friends across multiple floors.

The kids section is only part of the appeal because the whole building has snacks, stationery and calm spaces to wander.