Skip to content
Vanta
Journal / essay4 Nov 2025 · 7 min read

A skyline is a policy

Rotterdam's towers did not happen by accident — they were legislated, drawn and argued into being. On the high-rise vision, and what other cities misread about it.

By Hidde Vermaas

Visitors assume Rotterdam's skyline is what happens when a city has no old centre left to protect: an accident of the bombardment, filled in with ambition. The truth is less romantic and more useful. Rotterdam has tall buildings because it wrote rules that made tall buildings possible — and then kept rewriting them every few years, in public, with drawings.

The high-rise vision does something most planning documents refuse to do: it says where, how tall, and — crucially — what the city expects in return. Height is concentrated along the spine where the ground can carry it, literally and culturally: the station district, the Maas banks, the Kop van Zuid. Outside those zones, the answer is a calm, predictable no. Inside them, the answer is a negotiable yes.

The trade every tower makes

The negotiable part is the interesting part. A Rotterdam tower buys its height with public goods at ground level: an open plinth, wind comfort on the pavement, sometimes a public floor higher up. The vision made explicit what older cities left to chance — that a tower is a deal between a developer and everyone else, and that the everyone-else side of the ledger has to be written down.

Other cities ask 'how tall?'. Rotterdam asks 'what for, and what do we get at the door?'

Cities that copy Rotterdam usually copy the wrong half. They import the permission — the zones, the heights — and forget the counter-demands, and are then surprised when they get podium parking wrapped in render-grade glass. The skyline photographs the same at first. The street tells the difference within a year.

  • Concentrate height where infrastructure already is — a tower without a station is a traffic forecast.
  • Write the public trade into the rules, not into the goodwill of the applicant.
  • Review silhouettes together: a skyline is a composition, not a leaderboard.
  • Keep the rules public and current — certainty is what actually lowers the cost of building tall.

Our studio exists because of this policy environment, and we argue inside it constantly — for a higher shoulder here, a deeper loggia there. That is the vision working as intended. A skyline you can argue with, drawing against drawing, is a skyline that stays deliberate. The alternative is not freedom; it is whatever the last spreadsheet wanted.