Biblioteca Secreta Nl ((free)) <LATEST ◎>

While the museum is crowded, the Cuypersbibliotheek (the library inside the Rijksmuseum) is a silent, secret fortress. You don't need a ticket to the museum to enter the library if you go through the research entrance on the Hobbemastraat. It holds the world's largest collection of art history books—many of which are not cataloged online.

Biblioteca Secreta NL has become a reference point for several online subcultures: biblioteca secreta nl