The Brown House (German: Braunes Haus) was the name given to the Munich mansion located between the Karolinenplatz and Königsplatz, known before as the Palais Barlow, which was purchased in 1930 for the Nazis.

Situated between Karolinenplatz and Königsplatz, the mansion was built in 1828 by Jean Baptiste Métivier [de] in neoclassical style for the aristocrat Karl Freiherr von Lotzbeck.

[6] Acquiring the Brown House in Munich pleased Hitler, as operating from such a stately building helped provide the Nazi Party with an "image of respectability.

"[8] Subsequent building projects emerged in the vicinity of the new party headquarters as the Brown House formed a sort of nucleus for Nazi construction and activity.

[9] Hitler maintained an office in the Brown House, as did Hans Frank, Heinrich Himmler, Hermann Göring, Rudolf Hess, Philipp Bouhler, and Franz Xaver Schwarz.

[11] Significant amounts of money were contributed to the party as a result of Göring's business contacts, some of which he used to construct an underground garage lift at his apartment in the Brown House leading straight to his personal lobby, so guests could discreetly visit him there.

Since the authorities sometimes carted arrested people into the Brown House for interrogation, the structure also acquired the nickname, the "Denuntiatur", which was a pun combining the "act of denunciation" and the papal nunciature that was across the street.