Sheikh Lotfollah Mosque is one of the architectural masterpieces of Safavid Iranian architecture, standing on the eastern side of Naqsh-e Jahan Square, Isfahan. Construction of the mosque was started by the command of Shah Abbas in 1603 and was finished in 1619. It was dedicated to his father-in-law, Sheikh Lotfollah, a prominent religious scholar and teacher who came to Isfahan at the orders of Shah Abbas. It is said that the Safavid king designed this mosque so that Sheikh Lutfollah would have a place to lead prayers and teach classes. Located directly across from Ali Qapu Palace, a tunnel was built under Naqsh-e Jahan Square to connect the Palace and Sheikh Lutfollah Mosque and allow the Safavid royal to avoid walking across the square to reach the mosque. Despite its simple architecture, the finest materials were used in the construction of the mosque and the best artists were commissioned to create its complex interior and exterior decorations. Unlike other mosques in Iran, Sheikh Lutfollah Mosque has no courtyard or minarets. There is a Thuluth inscription above the entrance of the mosque by the 17th century master calligrapher Ali Reza Abbasi. The “peacock” figure at the center of the interior side of the dome is one of the unique characteristics of the mosque. If you stand at the entrance gate of the inner hall and look at the center of the dome, a peacock can be seen, whose tail is the sunrays coming in from the hole in the ceiling. Inside the sanctuary you can marvel at the complexity of the mosaics that adorn the walls and the extraordinarily beautiful ceiling, with its shrinking, yellow motifs. The shafts of sunlight that filter in through the few high, latticed windows produce a constantly changing interplay of light and shadow .The mihrab is one of the finest in Iran and has an unusually high niche. There are two small inscriptions in Persian language on two sides of mihrab’s wall, showing name of the architect saying “a poor humble man begging the mercy of Allah, Ostad Horrian builder from Isfahan”. Sheikh Lutfollah Mosque is a UNESCO World Heritage Site.