After I sent the comment it occurred to me it could be Versailles. My wife and I were at Versailles in early spring of 1991 (It is hard to believe that was 18 years ago). We got lost on the Paris subway system going to catch the train to Versailles and did not get to Louis XIV place until after 2:30 PM.
In 1996 we did a Scandinavian cruse that had us in St. Petersburg for 2 full days. Versailles in many ways looks a lot like Catherine the Great's Summer Palace. The museum there (The State Hermitage Museum) is said to rival the Louvre in many ways (The story is the Russians looted Germany at the end of WWII). Please excuse my misspellings. I never got much past grade school level.