Come visit the palace that was built in the first half of the 17th century for Cardinal Richelieu and later used as a residence by the royal family. Though it went through rough times as well (during the French Revolution) today, it is restored to its former beauty and you can visit its breathtaking gardens and court.
Please note that only the garden and the court are open to the public.
Free.
Wikipedia https://en.wikipedia.org/wiki/Palais-Royal
Official website http://www.domaine-palais-royal.fr/en/Prepare-for-your-visit/Prepare-for-your-visit
Address 8 Rue Montpensier, 75001 Paris, France
Coordinates 48°51'48.649" N 2°20'12.876" E