Commonly known as the Plasencia Cathedral Museum, the building exemplifies the transition from Romanesque to Gothic architecture and is one of the town's most notable landmarks.

The Romanesque influence is evident in the fustes (shafts) and capitals of its columns, while the Gothic style is seen in the arches and windows, revealed during a recent restoration.

By decree of June 3, 1931, the cathedral was declared a Monumento Histórico-Artístico (Historical-Artistic Monument) belonging to the National Artistic Treasury of Spain.

It features semicircular arches with archivolts, above which is a sculptural group carved in stone depicting the Annunciation of the Virgin Mary.

Its columns and capitals, featuring biblical scenes, are reminiscent of the Romanesque style, while the arches and ribbed vaults point towards the Gothic.

The center of the courtyard features a Gothic fountain from the 15th century, bearing the coats of arms of Bishop and Cardinal Juan de Carvajal.

The center of the courtyard features a Gothic fountain from the 15th century, bearing the coats of arms of Bishop and Cardinal Juan de Carvajal.

[citation needed] The most prominent feature of the Romanesque Old Cathedral in Plasencia is undoubtedly the Chapter House, also known as the Chapel of San Pablo or, popularly, the Torre del Melón (Melon Tower) for the grooved sphere at its summit.

[2] The Plasencia dome is undoubtedly the latest of all and closely resembles the Torre del Gallo of the Old Cathedral of Salamanca in its construction.