Observing stars, meteorites and projectors are exhibited. Visitors can enjoy learning about astronomy in the state-of-the-art planetarium. It also has one of the largest telescopes in Japan and conducts star observation and research in cooperation with Hokkai University.

＜Rooftop Observation Room
Visitors can view the stars through telescopes installed by Nayoro City, including the "Kitaterasu Telescope (50cm reflector telescope). The entire roof of the observation room moves (slides) open to the north, creating an open room with a panoramic view of the sky. Because of this mechanism, it is also called a sliding-roof observation room.

<Solar Telescope
A telescope for solar observations is located in a small observation room on the south side of the rooftop observation room. The public is not allowed to enter. Every day on clear days, images from the solar telescope are sent to the exhibition area on the first floor, where visitors can enjoy dynamic solar activity on a large monitor.

<Rooftop Astronomical Plaza
Visitors can view the starry sky from the observatory's rooftop space. Visitors can view the Milky Way, meteors, and other celestial objects that can be viewed without using a telescope.

<Observation Room
This is an observation room with a 10-meter-diameter domed roof. It is home to Hokkaido University's Pilika Telescope, the second largest public observatory in Japan with a 1.6m aperture.