Studentenwohnanlage APM, Student housing complex in Braunschweig, Germany

Studentenwohnanlage APM is a multi-story student housing complex on Rebenring 61-64 in Brunswick, made up of several connected blocks. The complex offers different apartment types alongside shared communal spaces spread across the various sections of the building.

The complex was planned from summer 1972 by the architectural firm Giesler + Giesler + Partner, which won a competition for a 500-space car park and then added student housing above it. Construction began in August 1974, the foundation stone was laid in April 1975, and the first residents moved in in March 1976. The building was completed in September 1976 and was fully renovated between 2014 and 2017 for €37 million.

The nickname Affenfelsen (monkey rock) comes from the folded exposed-concrete facade. At the western end, reached by a separate stair from Wendenmaschstraße, students of the TU run the Monkey Island bar voluntarily; it seats 30 people and has a table football table and the counter.

The complex sits at the junction of Rebenring, Wendenring, Hamburger Straße and Lampestraße, with the main north front facing the up to ten-lane Rebenring. The student bar Monkey Island is reached by a separate entrance from the Wendenmaschstraße and seats 30 people. A reconstructed 1976 flat, "Apartment Typ 3" (3.40 × 4.57 m), can be visited.

The complex is widely known among students and local residents by the nickname Affenfelsen, a name that refers to its appearance. This informal name has become so common that many people in Brunswick use it rather than the official address when giving directions.