The official home of the archives that reflect the convoluted history of France, this small but noteworthy palace was first built in 1371 as the Hôtel de Clisson, and later acquired by the ducs de Guise, who figured prominently in France's bloody wars of religion. In 1705, most of it was demolished by the prince and princesse de Soubise, through their architect, the much-underrated Delamair, and rebuilt with a baroque facade. The princesse de Soubise was once the mistress of Louis XIV, and apparently, the Sun King was very generous, giving her the funds to remodel and redesign the palace into one of the most beautiful buildings in the Marais. Tip: Before entering through the building's main entrance, the gracefully colonnaded Cour d'Honneur (Court of Honor), walk around the corner to 58 rue des Archives, where you'll see the few remaining vestiges -- a turreted medieval gateway -- of the original Hôtel de Clisson.

In the early 1800s, the site was designated by Napoleon as the repository for his archives, and it has served that function ever since. The archives contain documents that predate Charlemagne. But depending on the policies of the curator, only some of them are ever on display at any given moment, and usually as part of an ongoing series of temporary exhibitions that sometimes spill out into the Hôtel de Rohan, just around the corner on the rue Vieille du Temple.

Within these exhibitions, you're likely to see the penmanship of Marie Antoinette in a farewell letter she composed just before her execution; Louis XVI's last will and testament; and documents from Danton, Robespierre, Napoleon I, and Joan of Arc. The Archives have the only known sketch of the Maid of Orléans that was completed during her lifetime. Even the jailers' keys from the long-since-demolished Bastille are here. Despite the undeniable appeal of the documents it shelters, one of the most intriguing aspects of this museum involves the layout and decor of rooms that have changed very little since the 18th century. One of the finest is the Salon de la Princesse (a.k.a., the Salon Ovale), an oval-shaped room with sweeping expanses of gilt and crystal and a series of artfully executed ceiling frescoes by Van Loo, Boucher, and Natoire.