The discount is valid for seven days from the date of travel shown on their paper or electronic ticket.
The offer covers both directions on the Hue - Phong Nha route and the Hue – Da Nang heritage train, which crosses Hai Van Pass and passes Lang Co Bay.
Eligible sites include the Imperial City, the Museum of Royal Antiquities and the tombs of Emperors Thieu Tri, Duc Duc and Dong Khanh
Each valid train ticket entitles its holder to one discounted admission. Those eligible for multiple discounts will receive only the highest applicable rate, with benefits not able to be combined.