Time Out says
The largest mosque in Japan and one of the most beautiful in East Asia, Tokyo Camii brings to mind the great mosques of Istanbul. And that’s not surprising, considering its ornamentation is inspired by Ottoman architecture. Completed in 2000, this mosque is a replacement of a former structure built by Turkish immigrants in 1938. This current three-storey building was designed by architect Muharrem Hilmi Senalp and most of the materials used, including the marble, were imported from Turkey.
Non-Muslims are welcome to visit, but please be careful not to disturb or take photos of people praying. Women are advised to dress modestly and cover their hair. The adjoining Turkish Cultural Centre offers an introduction to both Islamic and Turkish culture.