"Zipangu" is the name for Japan used by Marco Polo. He described Japan as having a golden temple and palace, therefore Japan was considered to be a country of gold.
This building was not done in gold, just setting sun totally showed it like a golden palace.
This is The National Art Center, Tokyo. The world famous designer Kishou Kurokawa was responsible for the design. This unique design is very popular with photographers too.
▼ Official website of The National Art Center, Tokyo
The National Art Center, Tokyo is a unique and innovative art exhibition facility: Instead of maintaining a permanent collection, it makes the most of a total of 14,000 square meters of exhibition space, one of the largest in Japan, and focuses on serving as a venue for various art exhibitions.
The National Art Center, Tokyo (NACT) is a museum in Roppongi, Minato, Tokyo, Japan. A joint project of the Agency for Cultural Affairs and the National Museums Independent Administrative Institution, it stands on a site formerly occupied by a research facility of the University of Tokyo.
The architect for the museum was Kisho Kurokawa. The facility has 47,960 m² of floor space on a 30,000 m² site with four stories above ground and one below. Access is from Nogizaka Station on the Tokyo Metro Chiyoda Line.