The architecture of Azerbaijan (Azerbaijani: Azərbaycan memarlığı) refers to the architecture development in Azerbaijan. Architecture in Azerbaijan typically combines elements of East and West. Many ancient architectural treasures such as the Maiden Tower and Palace of the Shirvanshahs in the walled city of Baku survive in modern Azerbaijan. Among other medieval architectural treasures reflecting the influence of several schools are the Shirvan shahs' palace in Baku, the Palace of Shaki Khans in the town of Shaki in north-central Azerbaijan, the Surakhany Temple on the Apsheron Peninsula, a number of bridges spanning the Aras River, and several mausoleums. In the nineteenth and early twentieth centuries, little monumental architecture was created, but distinctive residences were built in Baku and elsewhere. Among the most recent architectural monuments, the Baku subways are noted for their lavish decor. The urban planning and architectural activities are regulated by the State Committee for City Building and Architecture of Azerbaijan Republic. The Shirvanshah Palace The Shirvanshahs ruled the state of Shirvan in northern Azerbaijan from the 6th to the 16th centuries. Their attention shifted to Baku in the 12th century, when Shirvanshah Manuchehr III ordered that the city be surrounded with walls. In 1191, after a devastating earthquake destroyed the capital city of Shamakhi, the residence of the Shirvanshahs was moved to Baku, and the foundation of the Shirvanshah complex was laid. This complex, built on the highest point of Ichari Shahar, remains as one of the most striking monuments of medieval architecture in Azerbaijan. The various sections of the Shirvanshah complex were not all created at the same time, and there was not a general plan for the entire complex's construction. Rather, each building was added as the need arose. Ornamental designs found on the buildings of the Shirvanshah Palace. Below: Drop-like medallion from the Royal Tomb with the name of the architect, Mohammad Ali, and the word for architect (me'mar) encrypted to be read in the reverse reflection of a mirror. Much of the construction was done in the 15th century, during the reign of Khalilullah I and his son Farrukh Yassar in 1435-1442. The buildings that belong to the complex include what may have been living quarters, a mosque, the octagonal-shaped Divankhana (Royal Assembly), a tomb for royal family members, the mausoleum of Seyid Yahya Bakuvi (a famous astronomer of the time) and a bathhouse. All of these buildings except for the living premises and