page_title: Leonine City
hierarchical_section_title: Leonine City
context_page_description: The Leonine City is the part of the city of Rome which, during the Middle Ages, was enclosed with the Leonine Wall, built by order of Pope Leo IV in the 9th century.
  This area was located on the opposite side of the Tiber from the seven hills of Rome, and had not been enclosed within the ancient city's Aurelian Walls, built between 271 and 275. After Christianity had risen to prominence and the Roman Empire had collapsed, the area had to be defended through the construction of a new wall, since it housed St. Peter's Basilica.
  Nowadays, the territory of the former Leonine City is made up of the State of Vatican City and the Roman rione of Borgo.
context_section_description: The Leonine City (Latin: Civitas Leonina) is the part of the city of Rome which, during the Middle Ages, was enclosed with the Leonine Wall, built by order of Pope Leo IV in the 9th century.
  This area was located on the opposite side of the Tiber from the seven hills of Rome, and had not been enclosed within the ancient city's Aurelian Walls, built between 271 and 275. After Christianity had risen to prominence and the Roman Empire had collapsed, the area had to be defended through the construction of a new wall, since it housed St. Peter's Basilica.
  Nowadays, the territory of the former Leonine City is made up of the State of Vatican City and the Roman rione of Borgo.
caption: A plan of Rome in the Middle Ages. The Leonine City is visible in the upper left section.
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