MADRID, 25th September, 2023 (WAM) – The stage is set for World Tourism Day 2023, with the global sector to come together around the theme of ‘’Tourism and Green Investments.''In what is set to be the biggest celebration to date, the official celebrations will be held on 27th September in Riyadh, Kingdom of Saudi Arabia. UNWTO's Member States will mark the occasion in every region through a range of special events and programmes.UNWTO Secretary-General Zurab Pololikashvili says: "Tourism has never been more important for our...