Hanoi preserves French colonial atmosphere mixed with Vietnamese chaos beautifully. The Old Quarter's 36 streets organize by traditional trades in theory. Crossing streets requires faith — traffic won't stop but will flow around you. Street food culture defines the experience — morning pho, bún chả, egg coffee. Motorbike tours provide city access impossible by car. Hoan Kiem Lake provides evening respite in the center. Water puppets deliver unique cultural performance worth experiencing. The Ho Chi Minh Mausoleum requires dress codes and closed days. Halong Bay requires day trip or overnight — don't rush the experience. The train street became so popular it's now restricted — expect changes. Grab (Southeast Asian Uber) works well for transport.