Paul Joseph Junhwan
Kang
I have always been inside cities. Not studying them. Inside them — in the rooms where decisions were made, on the streets where the gap between what a city promises and what it delivers becomes impossible to ignore.
800 million people live within ten meters of rising seas. Jakarta is sinking. Miami floods on sunny days. New York's once-in-a-century storm is becoming a once-in-a-decade event. The cities we live in are running out of time — and no one has agreed on what comes next.
In 1900, the average human life expectancy was 32 years. By 2100, it is projected to reach 83, possibly 92. We are living longer than any society was designed to support. The structures to hold that time do not yet exist. Longer lives came as a gift — without the architecture to make them meaningful.
Every other response to aging treats the elderly as a problem to be managed — as consumers, as patients, as burdens. That framing is wrong. The elderly carry decades of accumulated knowledge, skill, and wisdom. In a super-aged society, twenty or thirty years remain after retirement. That is not time to fill. That is capacity to deploy.
A city that cannot protect its oldest citizens when the water rises has failed at the most basic question of what a city is for.
And a city designed to serve its oldest citizens will, in the process, become a better city for everyone.
South Korea is a divided nation — which means Google Maps cannot include English location data. Foreign visitors arriving in Seoul face a city entirely mapped in Hangul, with no English navigation available. The problem was not technical. It was geopolitical. So instead of waiting for governments or tech companies to solve it, the solution came from the citizens themselves. In a single day, thousands of Seoul residents carrying Samsung compact cameras embedded with location data photographed the city's key landmarks, streets, and destinations. The result: a crowdsourced English tourist map of Seoul, built by the people who know it best.
Discovery: When citizens are given the tools and a reason to act, they can solve problems that institutions cannot.
Five chapters of rights were acquired from United Agents, the agency representing Alain de Botton, one of the world's most widely read philosophers of everyday life. Working with major directors, Canon, and DramaFever, de Botton's literary lens on the city became a dramatic series — set in Seoul, telling Seoul's story to a global audience. A custom Twitter voting app was developed and embedded in the campaign, letting audiences shape the narrative in real time. The result: approximately 180 million views. People who had never considered Seoul began planning to visit it. A story moved bodies across borders.
Discovery: Content is not promotion. When a city is told through the right story, it becomes a destination people feel they already know.
Hermann Simon — author of Hidden Champions, one of the most influential business books on mid-sized global companies — was brought into direct collaboration with Seoul City's foreign direct investment campaign. The campaign was produced as a 3D animated film, positioning Seoul not merely as a tourist destination but as a global business hub — using Simon's intellectual framework as its foundation. The film aired on CNN, bringing Seoul's investment case to a global audience in a format that was neither advertisement nor documentary, but something new.
Discovery: A city speaks most powerfully when its story is told through the voices that the world already trusts.
Fifteen ambassadors were appointed across fifteen cities globally. Each ambassador brought local knowledge, local networks, and a stake in their city's relationship with Incheon. A round table structure was created — not a conference, but an ongoing working relationship between cities. Incheon's startups were then deployed to those cities to solve specific local problems, in direct collaboration with Colombian universities and local institutions. The city became not a sender of products but a sender of solutions.
Discovery: Cities can serve each other directly — bypassing national structures entirely — when the right people are given the right mandate.
During the COVID-19 pandemic, physical movement between cities stopped entirely. The connection had to become tangible in a new way. 10,000 PPE pouches were assembled — each containing game coupons, online yoga and Pilates passes, and vouchers from New York's local brands — bridging Seoul's public institutions and New York's street-level economy in a single physical object. The project was proposed to and executed with Eric Adams, then Brooklyn Borough President, and the Seoul Business Agency acting on behalf of Seoul City. Hand-delivered across New York, the pouches were a message from one city to another: we are still here, and we are still connected.
Discovery: Connection does not require movement. Sometimes a city can fit into the palm of someone's hand.
In every experiment, the same thing appeared at the center.
Not infrastructure. Not policy. Not technology.
People — specifically, the people the city was not designed for.
The citizen with the camera. The elderly resident with decades of knowledge. The local brand surviving a pandemic. The startup from another city solving a problem they had never personally faced.
Every time these people were given tools, a mandate, and a reason to act — the city came alive in ways no institution had planned. That is not coincidence. That is the pattern. And it is the foundation of everything that comes next.
Most future city work produces renderings, white papers, and conference presentations. The ideas are compelling. The buildings are beautiful. The slides are ambitious. And then nothing moves.
Every experiment in this portfolio was proposed to a real institution and executed in a real city. The partners were not hypothetical. The results were not projected. The proof exists because it was made.
Twenty-five years of city experiments
have built one framework.
Now the framework builds a city.
The Sim Eternal City Framework takes the pattern discovered across five continents and applies it to the most urgent design challenge of our time: the city that must exist for the climate-displaced and the super-aged — before the moment arrives when it is too late to imagine it. The methodology is the same. Propose to real partners. Execute in real places. Verify what works. Build city by city, one story at a time.
White Paper Prelude published March 18, 2026. Floating City site announcement April 18, 2026. No Stone Tombstone pilot at Red Hook, Brooklyn.
The second city will be chosen with global partners. Not decided alone — decided together with the institutions, organizations, and individuals who join this story.
Partners, sponsors, co-creators, and residency collaborators across cities, institutions, and industries — building city by city, chapter by chapter.
The first Sim Eternal City book — the framework, the New York scenario, and the global expansion model. A story that opens the door for anyone to become a co-author.
The structure already exists.
What we are building is the story.
And right now, there is room for it to become a shared project.