The site of Vilhena Palace has been inhabited since ancient times, and post-Punic remains have been found in the area. In around the 8th century, a Byzantine fort was probably built on the site, and in the Middle Ages it developed into a castle known as the Castellu di la Chitati. The castle's inner walls were demolished in the 15th century, and the remaining part was built up as a palace by Grand Master Philippe Villiers de L'Isle-Adam in the 1530s. The palace was called the Palazzo Giuratale, and it housed the civil administrative council known as the Università. The structure was damaged in the 1693 Sicily earthquake. On 3 November 1722, the newly elected Grand Master, António Manoel de Vilhena, issued orders for the restoration and renovation of Mdina. The city entrance was completely rebuilt, and the seat of the Università was demolished to make way for a summer palace for the Grand Master. A new Banca Giuratale was built to house the Università following the demolition of its meeting place. Construction of Vilhena's new palace began in 1726, and it was completed two years later in 1728. The building was designed by Charles François de Mondion in the French Baroque style that was popular in Parisian hôtel palaces, and it was constructed under the supervision of the Maltese capomastro Petruzzo Debono.
Hospital
The palace served as a temporary hospital during a cholera outbreak in 1837. On 12 June 1860, the palace was converted into a sanatorium by the British military. The palace was leased for £160 a year, and conversion of the building into a hospital cost less than £1000. The hospital was temporarily closed down in 1890, and it briefly served as a barracks. It reopened soon afterwards, and was finally closed down in 1907. The palace was reopened by King Edward VII on 22 April 1909, as a hospital for patients suffering from tuberculosis. It was known as Connaught Hospital after Prince Arthur, Duke of Connaught and Strathearn, who donated £800 to buy new equipment for the hospital. The hospital was closed down in 1956.
Vilhena Palace is a large building which is considered to be "an excellent example of French Baroque." It has a U-shaped forecourt surrounded with loggias, which follows the plan of the original castle, and it possibly contains some remnants of the 16th century palace incorporated into the structure. The forecourt is approached through a gate decorated with Vilhena's coat of arms. The central façade of the palace contains the ornate main doorway, which is flanked by Corinthian columns and is surmounted by a bronze relief of De Vilhena and another coat of arms. The palace's interior is irregularly planned, contrasting sharply with the regularity and balance of the exterior. The building also contains an inner courtyard. Vilhena Palace is linked to the Corte Capitanale, which was built at the same time as the palace and was also designed by Mondion. This building served as Mdina's law courts, and its linking to the palace was a symbolic gesture to convey that the courts were under the jurisdiction of the Order of St. John. The Corte Capitanale now serves as the seat of Mdina's local council.
