The Old Town was built in the 12th century:
Santa María Cathedral the old plant was built in 12th century and finish in successive works in 14th and 15th centuries.
La Torre de Hurtado Anda this tower is the oldest construction in the city.
El Portalón built in wood and brick in the 15th century was an important inn. Nowadays it is a famous restaurant.
La Torre de Doña Otxanda this construction was built with the old wall.
San Pedro Church has a Gothic façada and inside Renaissance works.
La Casa de Cordón fron the 15th century.
Plaza Nueva neoclassical square whose plan is a perfect square.
Fueros Square designed by the famous sculptor Eduardo Chillida and the architect Peña Ganchegui.
San Antonio Convent and Church. In front of then there are two sculptures of Agustín Ibarrola.
Basque Parliament that dates from 1851-1853.
New Cathedral neogothic style of the 20th century.