Pope made his first trip to Iran in the spring of 1925. He gave a speech urging Iranians to appreciate the architecture of their past and to use it as inspiration for modern buildings. Reza Shah Pahlavi, then prime minister and later Shah of Iran, heard the speech, met Pope, and began taking a personal interest in Persian architectural restoration and revival. He authorized Pope to enter key mosques to study and photograph their architecture and became a lifelong supporter of Pope's pursuits in the field.