Rue de Montmorency

• Type: Street / Safe House Location
• Location: Paris, France
• Owner/Residents: Nicolas Flamel, Perenelle Flamel
• Key Features: Location of the magically concealed residence and safe house of the famed alchemist Nicolas Flamel.

Rue de Montmorency is a real street in Paris, France, which, within the Wizarding World, is the location of the home of Nicolas Flamel and his wife, Perenelle Flamel. For centuries, this address served as the residence of the creator of the Philosopher's Stone. While the street itself appears ordinary to Muggle eyes, the Flamel residence is hidden and protected by powerful enchantments. The exterior of the building is unassuming, blending in with the surrounding architecture. However, its interior is a marvel of magic, filled with alchemical instruments, ancient books, and various magical artifacts, including a large crystal ball used for scrying (film). The entrance itself is magical, requiring a specific sequence to gain access (film). This location is not mentioned in the original seven Harry Potter novels. Its introduction to the canon comes from the Fantastic Beasts film series.

The Rue de Montmorency has no role in the original Harry Potter book series. Its significance is established in the context of the Global Wizarding War against Gellert Grindelwald. In 1927, the Flamel residence on this street served as a crucial safe house for those opposing Grindelwald. Newt Scamander, Tina Goldstein, and Jacob Kowalski sought refuge there after escaping the French Ministry of Magic (film). It was at this location that Nicolas Flamel provided them with shelter and guidance. Using his crystal ball, Flamel showed the group a vision of the impending rally of Grindelwald's followers at the Lestrange Mausoleum in the Père Lachaise Cemetery. Galvanized by the vision and Jacob Kowalski's plea, the elderly alchemist decided to join the fight, later playing a key role in containing Grindelwald's destructive Fiendfyre (film).

• Nicolas Flamel's House: The primary point of interest on the street. It functions as a home, an alchemical laboratory, and a secure sanctuary for allies.

• The inclusion of this street is a direct reference to the historical Nicolas Flamel, a French scribe and manuscript-seller who lived from approximately 1330 to 1418. The real Flamel and his wife Perenelle did own property on this street.
• The house at 51 Rue de Montmorency in Paris, built by the historical Flamel in 1407, is widely considered to be the oldest stone house in the city.
• The location and its role as Flamel's home were created for the film The Crimes of Grindelwald and are not part of the original seven-book canon.