When the Order began to build a new capital Valletta in 1566, a new Grandmaster's Palace and a series of new auberges were built. The auberges in Valletta are much larger than their counterparts in Birgu, and can be considered as palaces. The most important auberge still standing is Auberge de Castille, which currently houses the Office of the Prime Minister of Malta. Over the years, the Grand Masters also built a number of large residences in the countryside, such as Verdala Palace and San Anton Palace. Both of these now serve as official residences of the President of Malta.