The Crusaders called the city Antartus, and also Tortosa.
It was captured in 1099 during the First Crusade, but it was later taken over by Muslims, before it was recaptured by Raymond of Saint-Gilles in February 1102 after two weeks of siege, then it was left in 1105 to his son Alfonso Jordan and was known as Tortosa.
In 1123 the Crusaders built the semi-fortified Cathedral of Our Lady of Tortosa over a Byzantine church that was popular with pilgrims.
The Cathedral itself was used as a mosque after the Muslim reconquest of the city, then as a barracks by the Ottomans.
It was renovated under the French and is now the city museum, containing antiquities recovered from Amrit and many other sites in the region.

Nur ad-Din Zangi retrieved Tartus from the Crusaders for a brief time before he lost it again.

In 1152, Tortosa was handed to the Knights Templar, who used it as a military headquarters.
They engaged in some major building projects, constructing a castle with a large chapel and an elaborate keep, surrounded by thick double concentric walls.
The Templars' mission was to protect the city and surrounding lands, some of which had been occupied by Christian settlers, from Muslim attack.
The city of Tortosa was recaptured by Saladin in 1188, and the main Templar headquarters relocated to Cyprus.
However, in Tortosa, some Templars were able to retreat into the keep, which they continued to use as a base for the next 100 years.
They steadily added to its fortifications until it also fell, in 1291.
Tortosa was the last outpost of the Templars on the Syrian mainland, after which they retreated to a garrison on the nearby island of Arwad, which they held for another decade.
The Crusaders called the city Antartus, and also Tortosa. It was captured in 1099 during the First Crusade, but it was later taken over by Muslims, before it was recaptured by Raymond of Saint-Gilles in February 1102 after two weeks of siege, then it was left in 1105 to his son Alfonso Jordan and was known as Tortosa. In 1123 the Crusaders built the semi-fortified Cathedral of Our Lady of Tortosa over a Byzantine church that was popular with pilgrims. The Cathedral itself was used as a mosque after the Muslim reconquest of the city, then as a barracks by the Ottomans. It was renovated under the French and is now the city museum, containing antiquities recovered from Amrit and many other sites in the region.
Nur ad-Din Zangi retrieved Tartus from the Crusaders for a brief time before he lost it again.
In 1152, Tortosa was handed to the Knights Templar, who used it as a military headquarters. They engaged in some major building projects, constructing a castle with a large chapel and an elaborate keep, surrounded by thick double concentric walls. The Templars' mission was to protect the city and surrounding lands, some of which had been occupied by Christian settlers, from Muslim attack. The city of Tortosa was recaptured by Saladin in 1188, and the main Templar headquarters relocated to Cyprus. However, in Tortosa, some Templars were able to retreat into the keep, which they continued to use as a base for the next 100 years. They steadily added to its fortifications until it also fell, in 1291. Tortosa was the last outpost of the Templars on the Syrian mainland, after which they retreated to a garrison on the nearby island of Arwad, which they held for another decade.
Tartus