The Episcopal Palace of Astorga is a neo-Gothic style building located in the city of Astorga. Designed by the modernist architect Antoni Gaudí, it is one of his few works outside Catalonia, along with El Capricho de Comillas in Cantabria and Casa Botines in León. The palace was built between 1889 and 1915. This work is part of Gaudí's neo-Gothic period (1888-1898), a period in which he freely and personally reinterpreted medieval Gothic art, improving its structural solutions. At that time, neo-Gothic was one of the most popular historicist styles, largely influenced by the studies of Viollet-le-Duc. Gaudí studied in depth various Gothic styles, such as Catalan, Balearic, Rosellonese, Leonese and Castilian, and concluded that the Gothic style was imperfect. For his designs, he eliminated the need for buttresses by using ruled surfaces and reduced excessive cresting and fretwork.

Since 1962, the palace has housed the Museo de los Caminos, dedicated to the Camino de Santiago. The building was declared an Asset of Cultural Interest on July 24, 1969 and is part of the European Route of Modernism. In 2015, during the extension of the Way of St. James in Spain by UNESCO, the Episcopal Palace was included in the "Retrospective Inventory - Associated Elements" with the number 1709.

The former Episcopal Palace, probably built in the 12th century thanks to a donation from Queen Urraca, was destroyed by fire in December 1886. In the absence of a diocesan architect, Bishop Joan Baptista Grau i Vallespinós commissioned the construction of a new palace to his friend Gaudí, who was involved in several projects at the time and could not travel to Astorga, so he requested detailed information of the land to begin the design. Gaudí sent the plans, which were approved after some modifications in 1889. Despite Gaudí's visits to the site, his involvement ended in 1893 after the death of Bishop Grau due to differences with the chapter. Subsequently, the project was taken up by other architects, including Francisco Blanch Pons and, finally, Ricardo García Guereta, who completed the construction between 1907 and 1915 following Gaudí's original design, although with some changes.

The palace went through several stages of abandonment and different uses, including as a barracks during the Civil War, until in the 1960s it was decided to convert it into a museum. Between 2014 and 2017 a comprehensive restoration of the building was carried out.

The Episcopal Palace presents a medieval aesthetic due to its neo-Gothic style, similar to other works by Gaudí such as the Teresian School and the Botines House. Externally, the palace is shaped like a castle with cylindrical towers at its corners and a moat surrounding it. The materials used, such as gray granite from El Bierzo, blend in with the surrounding environment, especially with the neighboring cathedral. Inside, the building is reminiscent of a church with four levels: a semi-basement, the first floor, the main floor, and an attic.

On the first floor there are administrative offices, while on the main floor there are rooms such as the Throne Room and the chapel, decorated with frescoes, stained glass windows and furniture designed by Gaudí. The attic, in addition to several rooms, houses the bishop's library. The building is crowned with gable roofs and decorative wrought iron elements.

Since 1962, the Episcopal Palace has housed the Museum of the Ways, which brings together various pieces of religious art, mainly related to the pilgrimage to Santiago de Compostela. The museum contains Romanesque carvings, gold and silver work, Gothic style paintings and a collection of processional crosses, among other objects of historical and artistic value.