Art:Signal Festival

Short description: Annual festival of light art and digital culture in Prague

Signal Festival
Videomapping on the façade of the Church of St. Ludmila, Náměstí Míru, during the 2017 edition.
Status	Active
Genre	Light art, digital art, interactive installation
Frequency	Annual
Location(s)	Prague, Czech Republic
Country	Czech Republic
Inaugurated	2013
Most recent	2025
Website	www.signalfestival.com

Signal Festival is an annual festival of light art, digital art, and interactive technology held each October in Prague, Czech Republic. Over four evenings, artists from the Czech Republic and around the world create large-scale light installations, video mapping projections, and interactive works in the city's streets, squares, and historic landmarks. Since its inaugural edition in 2013, the festival has become the most attended cultural event in the Czech Republic, welcoming more than five million visitors across its first thirteen editions.

The festival is free to attend along its outdoor routes, with select indoor or premium installations available on a paid-ticket basis. It is organised by Signal Group, founded by producer Martin Pošta, curator Jan Rolník, and artist Amar Mulabegović.

History

Origins

The concept for Signal Festival arose from a large-scale video mapping project created in 2010 by the Czech art group The Macula and producer Martin Pošta, presented on the façade of the Prague astronomical clock to mark its 600th anniversary. The success of the projection prompted Pošta, together with curator Jan Rolník and Macula artist Amar Mulabegović, to develop the idea of a dedicated festival of light art for Prague. Preparation for the inaugural edition took approximately three years.

The festival receives funding from the Capital City of Prague, the Czech Ministry of Culture, the Ministry of Regional Development, involved municipal districts, and commercial sponsorship partnerships.

Growth and recognition

From an attendance of approximately 250,000 in its first year, Signal Festival grew rapidly. By its fourth edition in 2016, attendance had reached 578,137 according to data collected by festival partner Cisco Systems. That same year, the festival was designated a top-priority cultural event of Prague and the Czech Republic by the city authorities and the Czech Ministry of Culture.

In 2014, The Guardian named Signal among Europe's top ten light art festivals. The Singapore daily The Straits Times listed it among the eight most interesting light festivals in the world in 2017.

In thirteen years, the festival has drawn more than five million visitors to Prague, making it the largest showcase of digital and creative culture in the Czech Republic.

Concept and format

Signal Festival takes place over four nights each October, typically from a Thursday to a Sunday. Installations are distributed across designated walking routes through Prague's city centre and, from 2017 onwards, outer districts including Vinohrady, Holešovice, and Karlín. Routes are designed so that visitors can explore on foot, with the majority of works accessible free of charge.

The programme combines video mapping on historical façades, large-scale outdoor light installations, interactive works, and immersive indoor environments. Each edition includes new commissions and world or European premieres; at the 2016 festival, two thirds of the 23 installations were world or European premieres.

From 2015, the festival introduced a paid spherical-dome installation (the Signal Dome) for more intimate, immersive experiences. From 2017, a ticketed Signal Gallery Zone provided indoor access to select works. By 2024, this concept had evolved into a Signal INSIDE paid zone, and a Prague Castle circuit was opened for the first time.

Signal Festival also supports emerging Czech artists through the Signal Calling programme, an open-call initiative introduced in 2017 for Czech artists not yet established internationally.

Annual editions

2013

The inaugural festival was held from 17–20 October 2013 and attracted approximately 250,000 visitors. The BBC covered the launch, noting that lighting designers from across Europe had been commissioned to illuminate the city's landmarks. Projection sites included Charles Bridge, the Church of St. Ludmila at Náměstí Míru, and the Petřín Lookout Tower. Entry was free; visitors could purchase special viewing glasses for certain exhibits for 30 CZK.

2014

The 2014 edition (17–20 October) attracted around 460,000 visitors, nearly double the inaugural year's attendance. The Guardian listed Signal Festival among Europe's top ten light art festivals in September of that year, significantly raising the festival's international profile.

2015

The 2015 edition, opening on 15 October, introduced two new features. The Transmit platform — an educational and professional forum for light design specialists, artists, and practitioners — was launched alongside the festival programme. The Signal Dome, a 360° spherical projection structure located on Klárov, was the festival's first paid-entry installation. It presented Nimbes, a fifteen-minute dome projection by French artist Joanie Lemercier.

2016

The 2016 festival (13–16 October) set an attendance record of 578,137, measured by Cisco Systems, the festival's technology partner. The programme comprised 23 installations — 15 light installations, four video mappings or spherical projections, and four interactive works — by artists from eleven countries. A daytime programme was introduced for the first time, primarily targeting families and children, with the Signal Dome screening a spherical projection, Charles IV, by Jan Šíma, from 9:30 a.m. daily. The majority of the programme remained free of charge, with paid entry to the Signal Dome and a video mapping at Tyršův dům.

2017

The fifth-anniversary edition (12–15 October 2017) introduced several lasting structural changes. For the first time, the festival operated two geographic routes: the traditional Downtown route through Old Town and New Town, and a new Vinohrady route through Prague 2 and Prague 3.

A ticketed Signal Gallery Zone (CZK 100) was introduced, housing four indoor installations along the Downtown route in architecturally significant spaces. The Signal Calling open-call programme for emerging Czech artists debuted, with selected works including an installation by students from Milena Dopitová's studio at the Academy of Fine Arts, Prague; works by artist collectives Blok_4 and Heardt; and an installation that had previously premiered at the Burning Man festival in Nevada. As part of its anniversary, the festival repeated all previous video mappings on the façade of the Church of St. Ludmila across the four festival nights.

2019

The 2019 festival (10–13 October) was themed around Revolution, marking the 30th anniversary of the Velvet Revolution. The programme incorporated references to the transformation of Czech society and public space since 1989. Signal Festival also began offering Signal Walks, guided tours of the installations for visitors wishing to contextualise the artworks.

2020 (cancelled)

The 2020 edition, scheduled for 15–18 October, was cancelled following restrictions imposed by the Czech health authorities in response to the COVID-19 pandemic. It was the only edition not to take place since the festival's founding in 2013.

2023

The 2023 edition (12–15 October) featured Canadian-Mexican artist Rafael Lozano-Hemmer's interactive projection Thermal Drift, which generates a live thermal image of audience members. A video mapping titled Echo, incorporating themes of nature, environment, and human connectivity, was projected on Karlínské náměstí. The festival continued its collaboration with Laterna magika.

2024

The twelfth edition (10–13 October 2024), themed Ecosystems II: Quest, comprised 22 installations including seven in the paid Gallery Zone. For the first time, the festival incorporated a route through Prague Castle, opening the Riding Hall and the South Gardens exclusively for evening visitors. Notable works included Strange Attractions by London studio United Visual Artists — a kinetic pendulum and multimedia installation presented at Kunsthalle Praha — and Silent Echoes by American sound artist Bill Fontana, installed in the Baroque refectory of the Dominican Convent, incorporating field recordings of bells from Notre-Dame de Paris and a glacial cave in the Dachstein massif. Spanish-Danish duo Desilence presented The Rhythm of the Ocean, a video mapping on the façade of the Municipal Library accompanied by music from composer Suzanne Ciani.

2025

The thirteenth edition (16–19 October 2025) featured 20 installations across two routes — City Centre and Vinohrady — with a new ticketed Signal INSIDE zone offering immersive indoor experiences. A centrepiece work was Tristan's Ascension (The Sound of a Mountain Under a Waterfall) by American video art pioneer Bill Viola, presented at the Convent of St Agnes of Bohemia (part of the National Gallery Prague), exploring themes of mortality and transcendence. The 2025 edition coincided with the opening of Signal Space, a permanent immersive digital art gallery established by the festival's organisers in a historic market hall dating from 1896 in the Holešovice district.

Notable artists

Signal Festival has presented works by internationally recognised artists across its editions, including:

• Joanie Lemercier (France) — spherical projection Nimbes, 2015
• Rafael Lozano-Hemmer (Canada/Mexico) — interactive thermal projection Thermal Drift, 2023
• United Visual Artists (UK) — kinetic installation Strange Attractions, 2024
• Bill Fontana (United States) — sound installation Silent Echoes, 2024
• Bill Viola (United States) — video installation Tristan's Ascension, 2025

The festival has also commissioned more than seventy original installations by Czech artists through its programmes, including the Signal Calling open-call initiative for emerging practitioners.

Signal Space

In October 2025, the Signal Festival organisers launched Signal Space, a permanent year-round immersive digital art gallery in the Holešovice district of Prague, housed in a historic covered market hall constructed in 1896. The venue spans multiple zones — a main gallery, interactive spaces, a café (Space Break), and a gift shop (Space Objects) — and presents large-scale works of digital, light, and sound art on an ongoing basis.

The inaugural exhibition, Echoes of Tomorrow, featured works by artists including Quayola, Max Cooper, and Zachary Lieberman. By March 2026, Signal Space had welcomed more than 70,000 visitors, and the exhibition was extended through June 2026 in response to continued public demand.

Awards

Signal Space received the InAVation Award at the 2026 ceremony, considered the leading international honour for innovation in audiovisual and immersive technology — commonly described in the industry as the "Oscar" of the AV world. The jury cited the gallery's integration of digital art, light, sound, and movement into a cohesive immersive cultural experience. Signal Space competed against institutions including teamLab Phenomena in Abu Dhabi and the Sherwood Observatory Planetarium in the United Kingdom.

The installation Audire Fluctus by Czech artist Kryštof Brůha — created through the Signal Calling 2024 open call in collaboration with PrusaLab, the prototyping workshop of Josef Průša — won the LIT Lighting Design Award at the 2025 LIT Awards ceremony.

Other activities

SIGNALlab

The festival organisers established SIGNALlab, a creative centre located in Holešovice Hall No. 40, serving as a research and production space for projects in light design and digital arts.

Transmit

Transmit is an annual professional conference and educational platform associated with the festival, launched in 2015 and aimed at light design specialists, digital artists, architects, and other practitioners. The second Transmit conference was held in March 2017.

Awards and recognition

• In 2014, The Guardian named Signal Festival among Europe's top ten light art festivals.
• In 2016, the festival was designated a top-priority cultural event of Prague and the Czech Republic by Prague City Council and the Czech Ministry of Culture.
• In 2017, the Singapore daily The Straits Times listed Signal among the eight most interesting light festivals in the world.
• Travel portal Orbitz listed Signal as one of seven "mindbending" light art festivals.
• FlightNetwork.com included Signal in its ranking of the top 36 global festivals of 2017.
• Signal Space received the InAVation Award (2026) for innovation in immersive audiovisual technology, competing against teamLab Phenomena Abu Dhabi and Sherwood Observatory Planetarium UK.
• The installation Audire Fluctus won the LIT Lighting Design Award (2025).

In popular culture

In the Marvel Cinematic Universe film Spider-Man: Far From Home (2019), the protagonists' school trip to Europe includes a sequence set during the Signal Festival in Prague. While authentic Prague locations were used during production, the main action sequence was filmed in Liberec, a city approximately 100 kilometres north of Prague, which was dressed with a temporary funfair to represent the festival setting.

See also

• Designblok
• Prague
• Light art

External links

• Official website
• Signal Festival at Prague City Tourism