Nietzsche-Haus, Sils-Maria, Philosopher museum in Sils-Maria, Switzerland.

The Nietzsche-Haus is a museum in Sils-Maria dedicated to German philosopher Friedrich Nietzsche and occupies a 19th-century building. It displays five permanent exhibitions, including a reconstructed study and bedroom that show how the philosopher lived during his stays.

Nietzsche rented an unheated first-floor room from the Durisch family for 1 franc a day, staying in 1881 and again from 1883 to 1888 — seven summers, not consecutive. The Durischs ran a grocery shop on the ground floor. In the room he called his cave he wrote The Gay Science, Beyond Good and Evil and Twilight of the Idols, and the idea of eternal recurrence came to him by Lake Silvaplana.

Nietzsche called his rented room his "cave" and the high-lying Sils "perla perlissima". The house belonged to the Durisch family, who ran a general store on the ground floor, and the president of the municipality Giàn Durisch let him the unheated first-floor room for 1 franc a day. Since 1960 it has been a museum, and each year it hosts the Nietzsche Colloquium on his work and influence.

The museum occupies the Durisch family's roughly 200-year-old house in the centre of Sils Maria, where the ground floor once held the Durischs' general store and Nietzsche's unheated room was on the first floor. Scholars can stay in the house for short periods to consult the library of over 4,500 volumes.

The library holds over 4,500 volumes on Nietzsche, built from three donated collections: Oscar Levy's, Nietzsche scholar Hans Erich Lampl's, and antiquarian bookseller Albi Rosenthal's. Scholars can stay briefly at the house to consult it. The Basel professor's study is furnished with the original furniture from Nietzsche's first own household in Basel, installed in 1991.