Within the spaceport there are two multiple launch site complexes, assembly facilities, testing, and range control.
Construction first begin in 1966, with the spaceport being opened in 1969. At that time it was operated by a predecessor to JAXA.
Osaki Launch Complex was first built in the 1970s, before a brief renovation before decommissioning. The original Osaki Launch Complex was decommissioned in 1992, having originally been used for development and operations for earlier N-I, N-II, H-I and J-I launchers.
Yoshinobu Launch Complex was constructed later to support operations for the H-II launcher.
