Input (grade 13): In 2001, the preservation society celebrated its 50th anniversary, and in 2005 a major rebuilding and extension of Tywyn Wharf station took place, including a much-expanded facility for the Narrow Gauge Railway Museum.
Output (grade 9): In 2001, the preservation society celebrated its 50th anniversary. In 2005 a major rebuilding and extension of Tywyn Wharf station took place.