Anyway, in the 17th century several clandestine churches popped up, hidden churches, that looked like regular buildings from the outside.
We don't have a lot of those clandestine churches left in the Netherlands, but here in the Hague you can find the H.H. Jacobus & Augustinus parish church, aka the Old Catholic Church.
I really really love the stucco over here by the way. It's not as dramatic as some baroque interiors. It's clean and simple yet elegant and still a bit whimsical here and there.
Research has indicated the Swiss-born Italian plasterer Joseph Bollina made the ceiling. His work can also be seen in the Fundatie van Renswoude orphanage in Delft.
This chamber is of historic significance, because it was here when they chose a new archbishop of Utrecht, against the will of the Pope. This event caused a rupture in the Dutch Catholic Church, and led to the foundation of the Old Catholic Church.
Oh and they're also open during Open Monumentweekend, 14 & 15 September!
Opening hours: Every Saturday at 2:30pm there's a free tour starting at HIS Gallery, Molenstraat 44.
How to get there: Take tram 1 from Centrum to Scheveningen, get off at Kneuterdijk and then it's a 4 minute walk.
Website: (in Dutch) http://denhaag.okkn.nl