The Regierungsviertel is government built as an argument — a strip of federal buildings laid deliberately across the line where the Wall once ran, daring you to read the politics off the architecture. Three kilometres along the great bend of the Spree, from the central station to the Brandenburg Gate, with Norman Foster's glass dome in the middle.
Start at Hauptbahnhof and cross to the Spreebogenpark, the lawn inside the river's curve where the whole quarter lines up across the water. Then the Bundeskanzleramt — the Chancellery the locals call the washing machine — and the Band des Bundes, the federal strip that straddles the Spree on a double footbridge. Cross it slowly; a parliament stitched across the old border is the point.
The Reichstag is the centre and the symbol — burned in 1933, ruined in 1945, capped in 1999 with Foster's dome you can climb inside. Entry is free but needs a booking made ahead; without one, take it in from the lawn.
End at the Brandenburg Gate, once marooned in the death strip, now simply the way through. Walk under it.
