The Shah Mosque () is a mosque located in Isfahan, Iran. It is located on the south side of Naghsh-e Jahan Square. It was built during the Safavid dynasty under the order of Shah Abbas I of Persia. It is regarded as one of the masterpieces of Persian architecture in the Islamic era. The Royal Mosque is registered, along with the Naghsh-e Jahan Square, as a UNESCO World Heritage Site. Its construction began in 1611, and its splendour is mainly due to the beauty of its seven-colour mosaic tiles and calligraphic inscriptions. The mosque is depicted on the reverse of the Iranian 20,000 rials banknote. It was found damaged in 2022. History In 1598, when Shah Abbas decided to move the capital of his Persian empire from the northwestern city of Qazvin to the central city of Isfahan, he initiated what would become one of the greatest programmes in Persian history; the complete remaking of this ancient city. By choosing the central city of Isfahan, fertilized by the Zāyandeh River ("The life-giving river"), lying as an oasis of intense cultivation in the midst of a vast area of arid landscape, he both distanced his capital from any future assaults by Iran's neighboring arch rival, the Ottomans, and at the same time gained more control over the Persian Gulf, which had recently become an important trading route for the Dutch and British East India Companies. The chief architect of this task of urban planning was Shaykh Bahai (Baha' ad-Din al-`Amili), who focused the programme on two key features of Shah Abbas's master plan: the Chahar Bagh avenue, flanked at either side by all the prominent institutions of the city, such as the residences of all foreign dignitaries, and the Naqsh-e Jahan Square ("Exemplar of the World"). Prior to the Shah's ascent to power, Persia had a decentralized power structure, in which different institutions battled for power, including both the military (the Qizilbash) and governors of the different provinces making up the empire. Shah Abbas wanted to undermine this political structure, and the recreation of Isfahan, as a Grand capital of Persia, was an important step in centralizing the power. The ingenuity of the square, or Maidān, was that, by building it, Shah Abbas would gather the three main components of power in Persia in his own backyard; the power of the clergy, represented by the Masjed-e Shah, the power of the