Its old main building (Rahbeks Allé 21) from 1860 was designed by Ferdinand Meldahl and is listed.
The buildings are located adjacent to the former Carlsberg brewery site, which is under redevelopment into a new, dense neighborhood.
Helbredelsesanstalten for idiotiske Børn, also referred to as Idiotanstalten, was founded in 1855 and originally based in the nadkacent property Bakkehuset.
[1][2] The institution later changed name to Frederiksberg Åndsvageanstalt and moved to Ebberød in Birkerød in 1970 and the building was listed in 1976.
It is built in red and yellow brick in a Historicist style inspired by Italian Renaissance architecture.