St. Joseph Cathedral opened in 1886 and looks a bit out of place in Vietnam, like the Opera House.
The area's streets are quite narrow, so riding a motorcycle seems sensible. For pedestrians, weaving through the traffic is quite a stressful experience.
Hoan Kiem Lake is a major landmark in the Old Quarter. Turtle Tower is a bit lonely on its own island in the middle of the lake.
Ngoc Son Temple is just off the coast in Hoan Kiem Lake. Among the temple dedications is one for General Tran Hung Dao, who defeated the Mongols in the 13th century.