Commissioned by the chief physician to the Mughal court of Shah Jahan — the same Mughal emperor responsible for the Taj Mahal — the Wazir Khan Mosque is considered to be the most intricately decorated mosque of the Mughal era. Built in the 17th century, the mosque is located in Lahore, Pakistan’s second most populous city, and is famous for its colorful Persian-style tile work, known as kasha-kari. Mughal frescoes and Punjabi artwork cover the mosque’s interior, and its main prayer hall is decorated with Arabic and Persian calligraphy on the inside and topped with a 31-foot-tall dome.