Paseo de Tacón - Credit: Wikimedia Commons
The Paseo de Tacón, or Paseo Militar, was created by the Captain General () Miguel Tacón y Rosique (1834–1838) who promoted the reform of the “road” that, starting from the calles of San Luis de Gonzaga (Reina) and Belascoáin, connected to the Castillo del Príncipe. Calle Belascoáin was the edge between the city and the countryside. Read more on Wikipedia
Source: en.wikipedia.org