Even on a tight schedule, Brandenburg Gate (Brandenburger Tor) earns the hours.
Allow 15–30 min.
Standing in Pariser Platz under the Quadriga, you feel the weight of where the Wall once cut the city in two — it photographs beautifully at dawn or floodlit at night. The honest catch: it's a 10-minute stop ringed by selfie-stick vendors and tour groups, and there's nothing to 'do' beyond look and read a plaque.