The Auberge d'Aragon was planned and designed by Girolomo Cassar soon after the laying of the foundation stone of Valletta in 1566. The Auberge survives almost in its original form with the addition of a porch in the 19th century.

Auberge d'Aragaon is a one-storey building with a symmetrical astylar main façade, comprised of three windows flanking the main entrance on either side.

The windows are simply decorated with a plain frame surround having mouldings at the sill and lintel.

Otherwise, the façade is plain without pilasters or decorations between the windows.

The corners are reinforced with imposing rusticated masonry and a continuous cornice around the corners. A doric-styled portico added in the early 19th century accentuates the main entrance on Misraħ Indipendenza.

The rear elevation of the auberge is still partly covered by a thin layer of what seems original red ochre.

This is the manner in which all public buildings used to be painted at that particular period.

In the courtyard of Auberge d'Aragon is a fountain with a small "Venus" type statue that apparently replaced a much larger one of a nude Amazon holding a fish.

Mepa scheduled Auberge d'Aragon and fountain as Grade 1 national monuments as per Government Notice No. 276/08 in the Government Gazette dated March 28, 2008.