The Colloredo-Mansfeld Palace was built in 1735 for Count Vinzenz Paul Mansfeld and attained its current High Baroque appearance in 1735 following refurbishment by the architect F. I. du Prée according to designs by G.B. Alliprandi on the site of an older building (fragments of this Romanesque and Gothic building have been preserved). The Palace is associated with both leading aristocratic families and historical events including the last sitting of the royal council of the 'Winter King' Frederick of the Palatinate following the Battle of the White Mountain in 1620. In 1840 the palace hosted the first exhibition of the Fine Arts Union and until 1914 it was a fencing hall for the aristocracy. The palace was also a center of Prague’s social life. Following the Second World War the palace was used as an archive by the Czechoslovak Academy of Sciences, and according to some information a recording studio was located here as well. It is currently administered by the Prague City Gallery which organizes exhibitions of contemporary art.