Japan is doing it right. No Muslims allowed and the practice of the religion is banned.
"According to japanfocus.org, as of 2009 there were 30 to 40 single-story mosques in Japan plus another 100 or more apartment rooms set aside for prayers in the absence of more suitable facilities. 90% of these mosques use the 2nd floor for religious activities and the first floor as a halal shop (Imported food; mainly from Indonesia and Malaysia), due to financial problems, as membership is too low to cover the expenses. Most of these Mosques have only a capacity of 30 to 50 people."
Kobe Mosque, Japan's first mosque, built in Indian style in 1935 by Jan Josef Švagr

Tokyo Camii Mosque with adjoining Turkish culture center

The Japan Mosque, the largest in the country, is the only Ahmadiyya mosque in Japan
https://en.wikipedia.org/wiki/Islam_in_Japan#Mosques