On 23 November GT Corporation celebrated its 25-year anniversary. On 22 November GT Corporation celebrated the 30-year anniversary of the construction of the Irben lighthouse, one of the greatest marvels of construction in the Baltic sea. Members of the board, office directors and honored guests travelled to GT Corporation SE main office in Tallinn, Estonia, to participate in the celebrations. After an exciting journey of sightseeing in Tallinn and along the coast, the guests travelled to Saaremaa island, where they visited the Lighthouse Museum located on the Sõrve peninsula.