Calle Castelar, Street in Puertochico, Santander, Spain

Calle Castelar is an urban street in Santander that links Paseo de Pereda with Avenida de la Reina Victoria, forming one of the main arteries of Puertochico. It runs past the Plaza de Puertochico, the Gamazo dike and the CEAR sailing centre, then leaves the coastline at the Cuesta del Gas, where the entrance arches of an old gas factory remain. The Siboney and Vitalicio buildings, both from the first half of the 20th century, stand on the street.

Calle Castelar takes its name from Emilio Castelar, the politician and president of the First Republic. It links the Paseo de Pereda, through the plaza de Puertochico, with the Avenida de la Reina Victoria. At the point of the square where a Francoist monument once stood, a large Spanish flag now flies. The street's buildings Siboney and Vitalicio date from the first half of the 20th century.

The street is named after Emilio Castelar, politician and president of the First Republic. At Puertochico square, where a Francoist monument once stood, a large Spanish flag now flies; the street is among Santander's most photographed spots for its bay and mountain views, especially on clear days or with the south wind.

The street runs from Puertochico square to Reina Victoria Avenue, with a bike lane and a wide promenade beside the Puertochico dock. In summer it forms part of the walking route from the city centre to the beaches of El Sardinero; a tunnel under Puertochico offers an alternative way to reach El Sardinero.

The street's name honours Emilio Castelar, president of Spain's First Republic. Near its start, a large Spanish flag stands on the spot once occupied by a Francoist monument, and the old gas factory survives only through its entrance arches on the slope known as the Cuesta del Gas.