NOTES: Durham Cathedral was founded in 1093. The building dates almost entirely from the 12th century and is widely regarded as the finest example of Norman architecture in Europe. Construction on the nave began in 1099 and lasted until 1128. It was vaulted in 1128-1133.
NOTES: This former mosque became a place of Christian worship in 1236 when Cordoba was captured from the Moors by King Ferdinand III of Castile and the cathedral was built inside it largely in the 1520s.
NOTES: This Mudejar style building was constructed under the Christian Kingdom of Castile by Islamic architects for Jewish use and originally known as the Ibn Shushan Synagogue. It became a church in the 1400s but no major alterations were made. It is a fine example of Almohad architecture given its construction in brick and the use of pillars rather than columns.