Spain does not acknowledge British sovereignty over Gibraltar, as they consider that the only part that was ceded was the fortified perimeter of the city, and the rest had no territorial jurisdiction (the literal phrase of the treaty is "the Catholic King wills, and takes it to be understood that the above-named propriety be yielded to Great Britain without any territorial jurisdiction"). Therefore, the Treaty would not have ceded any part of the isthmus. Spain considers that such an area was occupied by the UK since the 19th century (1815), and such "occupation of the isthmus the United Kingdom is illegal and against the principles of the international law". For said reason, British sovereignty is not acknowledged by Spain, considering itself instead to be owner of the territory (see map).