The House of Assembly Building overlooks Main Street and John Mackintosh Square. It was constructed in 1817 and previously served as the Exchange and Commercial Library. In 1951, the building was refurbished to host the Legislative Council.
I created this cut-away model for use in the Gibraltar Terminal Website and Android app.
These are some screen shots of the model constructed for the O'Haras museum at the Upper Rock.
3D model of Gibraltar buildings. These models have been made by referring to photos found over the internet, unfortunately I can't get hold of blueprints, so they are as accurate as I can get them by sight.