The names of the individual rooms of the Office of the Federal President are for the most part those already used at the time of Empress Maria Theresa. Coming from the „Adlerstiege“ staircase the visitor first enters an anteroom, the „Erstes Bellariazimmer“, named after the above-mentioned western annexe to the Leopoldine wing. The room was dominated by two paintings. A portrait of Margaret Theresa of Spain, wife of Leopold I and the first lady to live in this part of the building, is hung above an inlaid table. The portrait is the work of an unknown 17th century artist who took his inspiration from the style of Velazquez. Another painting, which is 100 years older, shows Archduke Ferdinand II of Tyrol.
In the next room, the „Zweites Bellariazimmer“, we find a number of pastels by the famous Swiss painter Jean Etienne Liotard, including a portrait of Maria Theresa designed to capture the personality of the Empress rather than present an idealised image of her. Maria Theresa wears a simple fur – trimmed robe as she might have worn in her family circle. On the opposite wall, a portrait of her beloved husband Francis I. A cabinet with lapis-lazuli and mosaic inlays dates from ca. 1740, while a second one features a most sophisticated system of overlapping doors hiding dozens of drawers and secret compartments.