Schloss Atzenbrugg, Historical castle and museum in Atzenbrugg, Austria.

Schloss Atzenbrugg is a former country castle in Atzenbrugg in Lower Austria's western Tullner Becken, now a museum on the life and work of Franz Schubert. The building, under heritage protection, has medieval origins and a former ring moat; its chapel was enlarged in 1398 and dedicated to Saint Catherine. Stucco repairs were carried out in 1691 by Domenico Piazzol.

The place began as a country estate and later became linked to a composer who spent several summers there in the 1820s. During this time, musical pieces were created there that still bear his name and document his artistic work at this location.

The castle serves as a venue for music lovers, hosting regular concerts that echo the period when the composer worked here. These events draw people interested in classical music who want to experience the connection between the place and its musical roots.

The castle can be visited year-round, but daylight hours and warmer months provide the best experience for exploring. The pathways through the grounds are easy to walk, and the interior rooms are readily accessible, making a self-guided visit comfortable.

The Schubert museum's exhibits include a lock of Schubert's hair, on loan from the estate of the researcher Ignaz Weinmann held by the Vienna Library. In 1996 the museum received a recognition prize of the Austrian Museum Prize. Since February 2024 Ildikó Raimondi has been designated artistic director of the Atzenbrugg Schubertiades.