San Gregorio Promenade Nature · Puertollano, Campo de Calatrava, Ciudad Real The Paseo de San Gregorio is Puertollano's (Ciudad Real) great 19th-century botanical garden, covering 22,383 square metres. It was created in the 19th century next to the Casa de Baños and from 1899 hosted the Fiesta del Árbol, which expanded its trees and gave it the density and diversity of species it retains today. Among its features stand out the Fuente Agria, the Concha de la Música and the Reloj de Flores. Photo: Zarateman (CC0) What to see and do in Puertollano