The museum was the first of its kind in Japan to be named after a corporate partner, adopting the '5-Days' branding in 2017.
The planetarium uses a projector capable of displaying over 20,000 stars, including seasonal constellations specific to the Hiroshima night sky.
The facility is physically connected to the Hiroshima Children's Library, sharing a common courtyard and educational philosophy.
The building's architecture incorporates a circular design intended to mimic the flow of planetary orbits.
The 5-Days Children's Cultural Science Museum in Hiroshima is a specialized educational facility designed to promote scientific learning through hands-on interaction. The building houses a prominent planetarium featuring high-definition projection systems for astronomical education. The museum floors contain interactive displays focusing on physics, optical illusions, and mechanical engineering. Specialized exhibits allow children to experiment with electricity, magnetism, and renewable energy technologies. It serves as a community hub for local youth science workshops and STEM-focused extracurricular programming. The facility maintains a distinct mascot, 'Pyonta', an anthropomorphic frog featured throughout its educational materials. Its proximity to the Hiroshima Peace Memorial Park integrates the site into the city's central educational district.
The life-sized mascot statue of Pyonta near the main entrance.
Check the planetarium show schedule immediately upon entry to secure a seat, as popular programs reach capacity quickly.
Prioritize the interactive floor exhibits before the planetarium if visiting with younger children to avoid afternoon fatigue.
Visit the rooftop observatory during clear weather for panoramic views of the Motomachi district.
Do not expect English-language signage for every interactive exhibit, as the facility primarily serves local Japanese-speaking schools.
Closed on Mondays and the day following a public holiday; also closes for year-end and New Year holidays.
Remove shoes when entering designated play zones or traditional tatami-mat learning areas.
