National Art Center, Tokyo (国立新美術館) 国立新美術館
It has no collection of its own: it is the largest exhibition space in Japan, 49,830 m².
The building is by Kishō Kurokawa.
Tokyo
Roppongi, Aoyama-itchome
Your Name.
Taki's date with Okudera-senpai. The scene is at Salon de Thé Rond, the café suspended at the top of the inverted cone inside the atrium; the undulating glass façade also appears.
All the places from Your Name.
https://theanimetrip.com/luoghi/museo-nazionale-d-arte-di-tokyo