Amsterdam – Queen Máxima of the Netherlands will open the newly renovated Museum Our Lord in the Attic on Tuesday, 22 September, 2015. The 17th-century canal house, with a hidden church in the attic, will reopen on 23 September after extensive restoration and renovation. It’s the city’s most famous clandestine church. Our Lord in the Attic offered members of the Catholic faith a place to worship during an era when they were prohibited from doing so in public. The new entrance building, designed by architect Felix Claus, is linked to the historic house by an underground passage and has expanded the museum to twice its original size.