The Falkenstein Grand Hotel is a luxury resort in Königstein im Taunus (Falkenstein im Taunus), Germany.
The current structure was completed in 1909 and opened by Kaiser Wilhelm II.
It was a sanatorium until 1976 and also served as a hospital, military sanatorium and hospital for invalids before being closed in 1991.
On 9 September 1999, it re-opened as a 106-room luxury hotel, the Kempinski Hotel Falkenstein Königstein Frankfurt, managed by Kempinski hotel.
In January 2021, its management transferred from Kempinski to Marriott International's Autograph Collection division.