That archtitect also notably designed a building that is still in the process of construction, but will contain 18 towers when it is finished.
One of this city's central districts contains a plan by Ildefons Cerda which created octagonal blocks, and also contains the Casa Terrades, which was built by Puig y Cadafalch. That city is the protected Eixample district, and like Mexico City, this city contains a rather phallic blue and red glass building called the Torre Agbar. This city contains a building with a checkered façade called the Casa Vicens, but more notable may be this city's Park Guell, which was designed by a Spanish architect. That archtitect also notably designed a building that is still in the process of construction, but will contain 18 towers when it is finished. For ten points, identify this city which contains many buildings designed by Antonio Gaudi, including the Templo Expiatorio de la Sagrada Familia.
One of this city's central districts contains a plan by Ildefons Cerda which created octagonal blocks, and also contains the Casa Terrades, which was built by Puig y Cadafalch.
{Barcelona}, Spain