The arrival of the Deep Space Network Historical milestone · Robledo de Chavela, Sierra Oeste, Madrid Image of Robledo de Chavela, not of the place itself. Spain and the United States signed in January 1964 the agreement to build here a spacecraft tracking station. Its first antenna, of twenty-six metres, entered service in July 1965, in time to receive the Mars images from Mariner 4. 1964-1965 Photo: No machine-readable author provided. Fjuarez assumed (based on copyright claims). (Public domain) What to see and do in Robledo de Chavela