Mashhad is a city in northeast Iran, known as a place of religious pilgrimage. It’s centered on the vast Holy Shrine of Imam Reza, with golden domes and minarets that are floodlit at night. The circular complex also contains the tomb of Lebanese scholar Sheikh Bahai, plus the 15th-century, tile-fronted Goharshad Mosque, with a turquoise dome. Museums within the shrine include the Carpet Museum, with many rare pieces.