The engaged couple, who is in Paris scouting wedding locations, spent an hour visiting the famed palace Sunday, after the Keeping Up With the Kardashians star and her rapper beau were dropped off at the gates by their driver, a source tells E! News.
Kim kept her attire casual for the visit, leading the way inside wearing Nike tennis shoes and black pants, where they met with officials.
Once their meeting was over, the "New Slaves" rapper and his fiancé tried to keep a low profile as they headed out, with Kanye wearing his hood and Kim looking down, trying to go unnoticed.
Their driver had the car waiting with the door open, so they hopped in immediately and drove off.