The event is part of the activities to mark National Day on September 2. Visitors will enjoy free admission to King Thieu Tri Mausoleum and An Dinh Palace when purchasing tickets for a tour to Imperial City, King Minh Mang’s Mausoleum and King Khai Dinh’s Mausoleum. Since 1994, Hue monuments and historical sites have hosted 33 million visitors, including 12 million foreigners. In 2015, the complex welcomed over 2.3 million visitors. In the first seven months this year, 1.36 million tourists visited the site, including 750,000 foreigners.