Buitenplaats Beeckestijn (summer residence Beeckestijn) is an 18th century estate and one of the few entirely intact large country houses, which was created as summer residences for wealthy Amsterdam merchants and regents on the edge of the dunes in Kennemerland. The present building was created from a 17th century manor and had several alterations and extensions.

The most extensive expansion took place between 1716 and 1721, commissioned by Jan Trip jr. and Petronella van Hoorn. Among other things the 17th century façade was replaced by a Louis-XIV façade, with chequered pilasters and a richly decorated entrance.

For more than two centuries Beeckestijn remained in the ownership of the Boreel family, until it was acquired by the municipality of Velsen in 1952. During WW II the house was seriously damaged. It became uninhabitable and key interior elements disappeared; the restoration was completed in 1969.

The manor is now owned and managed by ‘Vereniging Hendrick de Keyser’ - an association for the preservation of historic houses in the Netherlands. Since June 2019 Buitenplaats Beeckestijn is a museum, where one can experience the atmosphere in which the rich merchants of Amsterdam used to live.