The Sultanate of Oman, one of the well-known sultanates in the Middle East, was formerly known as the Sultanate of Muscat and Oman, named after the Capital and most important city in the Sultanate. Found on the east of the Arabian Peninsula, the sultanate is composed of two regions known as Oman (or the interior part) and Muscat - the coastal region. For years confusion was widespread regarding the distinction and location of Muscat and Oman and what these places stand for.