Cho Long Bien in Hanoi is the city's biggest wholesale produce market under the 1898 Long Bien Bridge, running through the night and peaking 02:00-05:00.
Cho Quang Ba in Hanoi is northern Vietnam's largest wholesale flower market on the West Lake bank, running 23:00-05:00 with pho stalls on the lake side.
Order: A pho or banh mi from the lake-side stalls along Au Co; the market wraps up by sunrise.
Tip: Best photographed 02:00-04:00 when buyers arrive from across northern Vietnam. Taxi or motorbike only at that hour.
Cho Hom in Hanoi is the Hai Ba Trung district's dry-goods market on Hue street, a quieter alternative to Dong Xuan with Northern food ingredients and Tet.
Order: Pre-made banh chung wrappers and dried mushrooms during Tet season; tropical fruit through summer.
Tip: Less tourist-heavy than Dong Xuan; bargain on the ground floor, fixed prices on the upper levels. Cash only.