There is one place named Mannen in Japan.
All places in the world called "Mannen".
Ono (18)
Ota (17)
Hongo (16)
Minato (15)
Wada (15)
Hama (14)
Ohama (14)
Tomari (14)
Kawasaki (14)
Nakamura (13)
Hara (13)
Nagahama (13)
Oshima (13)
Okubo (12)
Sakai (12)
Yoshida (12)
Kawaguchi (11)
Funakoshi (11)
Shinden (11)
Seto (11)
Okawa (11)
Kanayama (11)
Hirose (11)
Nakayama (10)
Takata (10)
Oura (10)
Otani (10)
Shirahama (10)
Ichiba (10)
Ikeda (10)