Museum Amstelkring Amsterdam
The attic of museum Amstelkring conceals a secret Catholic church, known as Ons' Lieve Heer op Solder (Our Dear Lord in the Attic). It was originally built in 1663 when Catholics lost their right to worship in their own way. The museum on the edge of the Red Light District has heavy Dutch furniture, table clocks and two kitchens with Delft tiles. The lower floors of the building became a museum in 1888 and nowadays they contain refurbished rooms, as well as a collection of church silver and various religious artefacts and paintings.