An older church,
Ecclesia Sancti Andree de Carraria, is mentioned as existing on this site as early as 1035, but of it, only a bas-relief remains. The first written documentation of the Carrara Cathedral dates to 1099. The church was first enlarged in 1099, when it received the status of
pieve. It is the first Medieval church to be constructed entirely of marble. The lower section of the façade and the side area near the St. John Portal are characterized by a bichrome decoration with geometrical marble tarsias. This part of the building can be dated to the early 12th century by the influences of the
Pisan Gothic style on the capitals and the
architrave as well as the similarities in the alternating black and white marble patterning with the Tuscan churches of
Pisa and
Lucca. This style was also widespread in Liguria at the time, as shown by the similarity of the cathedral's portal with that of
Genoa Cathedral, finished before 1142. The sculptors of the main portal and of the capitals of the first three spans in the interior belonged to the school of Maestor
Wiligelmo. In 1151 the church came under the jurisdiction of the Lateranense Canons of
San Frediano of Lucca and the second building phase began, lasting until about 1235 when the apse is known to have existed. The presbytery was added around this time as well, which lengthened the building from its original floor plan. There are similarities of style to contemporary Lucchese architecture. The lateral walls continued without the bichrome decoration. In the interior, the capitals are in the
Corinthian and
Composite orders, and the
mullioned windows have leaves, human and animal motifs, which are perhaps influenced by ancient Roman structures still existing in Lucca at the time. ==Overview==