Isle of Portland, Dorset, England, U K. The Portland Bill Lighthouse can be found at the Southern tip of the Isle of Portland for over 112 years. It was said to have been built in 1906 to replaced two previous lighthouse which were in use between 1716 and 1906. It has a distinctive red and white tower that was first shone it’s famous four flashes of light every twenty seconds on 11th January 1906.It was added that the lighthouse even saw the Titanic sail past on its first sea trials from Belfast