Cleans public spaces of coronavirus to bring well-being.



World's first URBAN SUN cleans public spaces of the coronavirus for better human gatherings. Inspired by the light of the sun, and scientific research that validates a new, specific light can safely clean up to 99.9% of the coronavirus, Studio Roosegaarde launches URBAN SUN.

Daan Roosegaarde and his team of designers, external experts, and scientists challenged themselves to discover how the power of light can be used to combat viruses and therefore enhance our well-being. Research shows that though traditional 254nm UV light is harmful, the new far-UVC light with a wavelength of 222 nanometers can actually sanitise viruses safely.

URBAN SUN, a project in development by Studio Roosegaarde as a symbol of hope, shines a large circle of this far-UVC light into public spaces, sanitising those spaces of the coronavirus. It acts as an additional layer of protection to current government rules. URBAN SUN aims to inspire hope. It combats the negative impact of social isolation by aiming to improve cultural gatherings, sporting events, public squares, and schoolyards.

FastCompany World Changing Ideas Finalist 2021.

Jet Bussemaker, President of the Council of the Public Health & Society Board, the Netherlands’ independent parliamentary advising body, praised the project: "It is inspiring. People are tired of COVID19. What we need is courage to find new solutions, to get in touch with each other, and create some intimacy. That is what Urban Sun is doing."

Studio Roosegaarde has been researching the power of light for many years. The self-funded URBAN SUN was begun in 2019. The COVID19 pandemic made the project much more urgent. URBAN SUN connects design with science to provide innovative solutions for people to meet in a more humane way.

URBAN SUN is created by Roosegaarde’s team, along with external experts and scientists from the Netherlands, the US, Japan, and Italy. The URBAN SUN’s far-UVC light source is measured and calibrated by the Dutch National Metrology Institute VSL. URBAN SUN meets the International Commission on Non-Ionizing Radiation Protection (ICNIRP) safety standards.

The science behind URBAN SUN is based on multiple peer-reviewed journal articles authored by scientists from Columbia University and Hiroshima University. The research shows that specific ultraviolet light (far-UVC) with the wavelength of 222nm can reduce the presence of viruses, including various strains of coronavirus and influenza, up to 99.9%. Even though traditional 254nm UV light is harmful, this specific light of 222nm is considered safe for both people and animals.

Daan Roosegaarde: “Suddenly our world is filled with plastic barriers and distance stickers, our family reduced to pixels on a computer screen. Let’s be the architects of our new normal and create better places to meet.”

Leading authorities are enthusiastic about the project and are describing it as hopeful, promising and full of courage:

-Listen here what Dutch scientists state about the far-UVC of URBAN SUN at NPO Radio 1.

-Carlo D’Alesio from MEG Science and Professor at Politecnico di Milano: “Virtual simulations indicate a positive impact of the Urban Sun in reduction of airborne coronaviruses in public spaces.“

-Matthew Hardwick PhD, President at ResInnova Laboratories, Washington D.C., who works with his team of virus experts and microbiologists: “Use of 222nm far-UVC in public space, as in Urban Sun, should prove to be both safe and effective.”

-Professor Karl Linden, award winning innovator in UV technologies and founding board member of the International Ultraviolet Association (IUVA), Colorado: “Urban Sun is inspiring. It will make enjoying public spaces safer and I look forward to visiting locations where this far-UVC sun is shining.”


2019-2021, Black sphere with far-UVC light, other media and technical simulations. The URBAN SUN’s far-UVC light source is measured and calibrated by the Dutch National Metrology Institute VSL. URBAN SUN is available for exhibitions and open to collaborations with governments and partners to upscale and improve new applications.

URBAN SUN is the second project of the series DreamScapes by Studio Roosegaarde and partners which show the beauty of combining art and science to create a better world.

Photography by Willem de Kam, Ossip van Duivenbode and Daan Roosegaarde. Movie by MediaMonks and Studio Roosegaarde.

With special thanks to Jet Bussemaker, Public Health and Society Board, Matthew Hardwick PhD, President at ResInnova Laboratories, MediaMonks: Victor Knaap, Regina Romeijn, Jacques Vereecken, Karlijn Hendriksen, Els Tau, Tim Knots, Rotterdam Festivals, Professor Karl G. Linden of International Ultraviolet Association, Carlo D'Alesio of MEG Science and Professor at Politecnico di Milano, Dutch National Metrology Institute VSL, Andrea Evers of Leiden University, Project Open Air, Francis Goeltner, City of Rotterdam, Rotterdam Partners, NBTC, Bijl PR, Constantijn van Oranje, Eric van Eerdenburg Lowlands, RIVM National Institute for Public Health and Environment, Feike Sijbesma of DSM, City of Amsterdam, Omar Hatamleh of NASA, Dimitris Bountolos of Ferrovial, Jose Mariano of Zero2Infinity, Carlo Ratti of MIT Senseable City Lab, Luis Eljaiek, David Brenner, Ph.D., D.Sc of Columbia University, LUXIGON, Ann Maes, and many others.

Urban Sun will shine at Lowlands
Urban Sun will shine at Lowlands
Breathe freer under our URBAN SUN, the unique light innovation which cleans public spaces of the coronavirus. Experience it yourself at the one and only Lowlands Festival, the Netherlands.
Urban Sun is world news
Urban Sun is world news
Today URBAN SUN which sanitises public space of viruses is world news and reached more than 850 million people. Thank you BBC, Yahoo, Reuters, Dezeen, Fastcompany, Frame, Jinek and many others. Looking forward to URBAN SUN's possibilities shining, and more applications in the future.
Scientists about URBAN SUN
Scientists validate the science of URBAN SUN in the Radio 1 interview with Ab Osterhaus, Andreas Voss and Ivo Lede (in Dutch).