She was in 1671 employed at the court of Princess Maria Eufrosyne, the aunt of king Charles XI of Sweden, where she became known for her great learning and her interest in science.
In 1686–1689, Königsmarck served in the army of Venice during the Morean War against the Ottoman Empire in Greece, where the two women accompanied him.
Contemporary accounts describe how they spent their time in scientific investigations during their stay and at the ruins of Acropolis in Athens.
After the Parthenon was hit by cannons in 1687, Anna found in the ruins an Arabic manuscript, which she donated to the Uppsala university when she returned to Sweden.
[14] After the death of Königsmarck in 1688, she lived with Charlotta De la Gardie in Stade in the Swedish Province of Bremen in Germany.