The Istana in Singapore has open house 4 times a year for public visit. Locals need not pay while tourist have to donate $1 in order to enter. Can't remember where the dollar goes to but it's for good cause I believe.
It's surprisingly a big place despite it looking kinda normal from the outside. We were blessed by good weather.
No photo taking was allowed in the main building itself so all we did was taking photos around the open area.
Chin Chai upload some lah hor.
And just to irritate my wife...
The next open house would be on 2nd day of Chinese New Year 2015! Go check it out!