You can't miss the huge stamp mosaic at the Counter Hall of General Post Office in central. The mosaic, which is 6.45 metres wide and 3.97 metres high, depicts the Hong Kong cityscape and is ...

The concrete and mortar should be slightly higher (about 1/2 to 1 inch) in the middle of the mosaic so water will run off and not pool in the middle. 8. Our mosaic was about a 30- to 32-inch ...