#QSD25 The Entropy Nexus at the Telefónica Building

Today we gather in one of Spain’s most extraordinary landmarks: the Telefónica Building on Madrid’s Gran Vía. Rising above the city since 1929, it was not only the nation’s first true skyscraper, but also a declaration of ambition—that Spain would stand at the forefront of modern communications.

Conceived by architect Ignacio de Cárdenas Pastor, in collaboration with American visionary Lewis Weeks, its steel frame and soaring silhouette introduced Spain to the language of New York’s skyline. More than an architectural marvel, it became a beacon of progress: from here, King Alfonso XIII placed the first transoceanic call from Spain to President Calvin Coolidge of the United States. During the turmoil of the Civil War, the building served as both a strategic hub and a symbol of resilience.

For nearly a century, this tower has embodied the leadership of Spanish communications—bridging continents, witnessing the evolution from copper lines to digital networks, and reminding us that innovation and vision can shape the destiny of a nation. Today, as the last copper exchanges fade into history and the future is written in photonics and quantum technologies, it is profoundly symbolic that we gather here.

The Telefónica Building is more than stone, steel, and glass—it is a testament to Spain’s ability to dream at scale, to lead with courage, and to connect the world. This spirit animates this year’s “Entropy Nexus Policymaking Session”, as Spain and its digital ecosystem carry that legacy forward, forging new pathways in digital trust, sovereignty, and quantum innovation across Europe and beyond.