The gate was destroyed in 1557 on the orders of Fernando Álvarez de Toledo, the viceroy of Naples.
The façade was programmatically decorated with sculptures to glorify the emperor, including one of Frederick himself.
A Roman bridge known as the Ponte Casilino crossed the Volturno from the north.
Frederick II had a new gate built on the north side of the Volturno before the bridge.
The gate was built to greet travellers coming from the Papal States.