Arabia City Holy is a term used to describe the major cities in the Arabian Peninsula. Medina, a city in Saudi Arabia, is the second holiest city in Islam after Mecca. Riyadh, the capital of Saudi Arabia, is known for its modern architecture and vibrant culture. ADEN, located in Yemen, is an important port city and was once the capital of the British Empire in the Middle East. Mecca, located in Saudi Arabia, is the holiest city in Islam and the birthplace of the Prophet Muhammad. Aqaba, located in Jordan, is a popular tourist destination due to its beautiful beaches and coral reefs. Yemen is a country located in the Arabian Peninsula and is known for its ancient history and culture. EMIR is a title of nobility given to rulers in the Middle East.