linguistic:paraphrasing, information:classification
Emirate period

Upon rising to power, Abd al-Rahman I initially resided in several palace- villas on the outskirts of Cordoba, most notably one called ar-Ruṣāfa. Ar - Ruṣāfa may have originally been a Roman villa or a Roman-Visigothic estate which was taken over and adapted by a Berber chieftain named Razin al-Burnusi who accompanied the original Muslim invasion by Tariq ibn Ziyad earlier that century. After a failed plot against him in 784, Abd al-Rahman I moved his residence definitively to the site of the Alcázar in the city. He and his successors built and continuously developed the Alcázar into the official royal residence and seat of power in Al-Andalus. Abd al-Rahman II was responsible for improving the water supply for both the city and the palace gardens. He may have also built the Albolafia and other norias (waterwheels) along the Guadalquivir River.

In 785, Abd al-Rahman I founded the Great Mosque of Cordoba, one of the most important monuments of the architecture of the western Islamic world. The mosque was notable for its vast hypostyle hall composed of rows of columns connected by double tiers of arches (including horseshoe arches on the lower tier) composed of alternating red brick and light-colored stone. The mosque was subsequently expanded by Abd al-Rahman II in 836, who preserved the original design while extending its dimensions. The mosque was again embellished with new features by his successors Muhammad I, Al-Mundhir, and Abdallah. One of the western gates of the mosque, known as Bab al-Wuzara' (today known as Puerta de San Esteban), dates from the 9th century expansion and is often noted as an important prototype of later Moorish architectural forms and motifs.

The palaces and the Great Mosque in Cordoba were linked via a high covered passage (sabbat) which was raised over the street between them, allowing the caliph direct access to the maqsurah area of the mosque via a corridor behind the qibla wall. The first sabbat was built by the Umayyad emir Abdallah (r. 888–912) for security reasons and was later replaced by al-Hakam II when the latter expanded the mosque.

The original Great Mosque of Seville, also known as the Ibn Addabas Mosque, was either built or enlarged by Abd al-Rahman II c. 830. It is now occupied by the Collegiate Church of the Divine Savior (Iglesia Colegial del Salvador), which preserves minor remains of the mosque. In Mérida, following a violent revolt, Abd al-Rahman II also built a fortress, now known as the Alcazaba of Mérida, which was later re-used by the Knights of Santiago and remains standing today.