ABSTRACTTeen Tokyo, a 3,000‐square‐foot, $1‐million long‐term exhibition at The Children's Museum, Boston, opened in 1992. It was developed to complement the museum's permanent Japanese House exhibition and to further its commitment to teaching about cultural differences and similarities. Designed primarily, but not exclusively, for youngsters aged 10 to 15 years, it is about growing up in contemporary Japan and the international culture of youth. An international team of developers, designers, and consultants spent five years preparing and funding the exhibition, using formative evaluation throughout. The project also included publication of a 50‐page catalogue/curric