There were originally two lighthouses , one on the pier , which had to remain a harbour light , and the Douglas Head Lighthouse .
A parliamentary report at the time revealed that the light already existing in Douglas had been out of operation since 1850 .
There were originally two lighthouses , one on the pier , which had to remain a harbour light , and the Douglas     .
A parliamentary report at the time revealed that the light already existing in Douglas had been out of operation since 1850 .