When visitors trade shares, a border bridge changes shape
Maite Cajaraville and Gisle Frøysland's Adoquines para el Guadiana closed Oct. 9 in Olivenza, Spain. A browser version is still playable.
Adoquines para el Guadiana closed Oct. 9, 2026, at the Museo Etnográfico Extremeño «González Santana» in Olivenza, Spain. It opened Sept. 30.
Maite Cajaraville and Gisle Frøysland of Piksel made it. The work turns the ruined Ajuda Bridge, on the border between Spain and Portugal, into a game.
Data centers, lithium mines and green hydrogen plants float above the bridge. Visitors buy or sell shares in them. Each decision adds or removes paving stones.
A browser version is still online under the name Brostein. It tracks 10 measures as the bridge changes, from water consumption and air pollution to local employment and social conflict.
The artists presented the piece on its final day, according to Piksel's announcement. It was part of Tras el telón de corcho, a Plataforma MAL program curated by José Iglesias García-Arenal for Spain's 9th Culture and Ruralities Forum.
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