The limestone semicircular tower Torres de Quart crowns the northern city gate of Puerta de Serranos. This is an example of Gothic construction with Mediterranean influences without clear decorative accents. Originally it had a typically defensive function. Important events from the city's history took place at the gate, e.g. greeting the troops returning to the city. Torres de Quart is connected by a bridge with a twin tower.
The tower was built in the fourteenth century. City guards were stationed there to protect Valencia against external threats. It was a good observation place, and the thick walls made it impossible to break through the gate. The tower has traces of bombing from the Napoleonic Wars. In the 16th century, the tower was transformed into a prison. In the 20th century, works of art transferred from the Prado Museum were stored there.