Hire a boat for a day and take a trip along the Perfume River to explore the various Tombs of the Emperors. Dating from the 19th century, the best preserved examples are the Tomb of Tu Duc and The Tomb of Minh Mang already listed above. In addition there are wonderful examples of Vietnamese architecture including the Tomb of Khai Dinh, the remote ruins of the Tomb of Gia Long and the Tomb of Thieu Tri which was built in 1848. There is also the Tomb of Dong Khanh which was constructed in 1917 and the Tomb of Khai Dinh which is the best preserved tomb along the river.