Shah Mosque is a mosque in Isfahan (Eşfahān), Iran standing in south side of Naghsh-i Jahan Square. It has been renamed to Imam Mosque after Islamic Revolution.
Built during the Safavids period, it is an excellent example of Islamic architecture of Iran, and regarded as the masterpiece of Persian Architecture. The Imam Mosque of Esfahan is one of the everlasting masterpieces of architecture in Iran and all over the world. It is registered along with the Naghsh-i Jahan Square as a UNESCO World Heritage Site. Its construction began in 1611, and its splendor is mainly due to the beauty of its seven-color mosaic tiles and calligraphic inscriptions.