As I mentioned in my book “How to enhance your wealth with feng shui?” http://www.penangfengshui.com/index.php?pages=info_book_01 page 100 that the ‘later heaven bagua’ is a very powerful tool.
As what I mentioned bagua, "trigrams" in English is actually a very powerful feng shui tool and you will notice that the one dollar Singapore coin is in the shape of bagua. Thus, all the citizens of Singapore carry bagua with them every day. It is in fact a superb and brilliant idea to bring prosperous to Singapore.
The Tang Plaza or the Marriott Hotel in the Orchid Road is with the shape of bagua and you can actually see there are lots of bagua surrounding the building. There are bagua on the floor, the ceiling and even the entrance. It is a way to avoid any unwanted or inauspicious qi. Even though the owner of the property was in fact a Christian.
Opposite the main entrance of the Marriott Hotel, there is a triangle pillar and the shape of triangle is actually the shape of the fire element as the shape of the fire is triangle. Thus, in order to eliminate the fire from the opposite building, there are trees to block it.
Please refer to my previous post if you wish to read more about my post about the feng shui of Singapore http://penangfengshui.blogspot.com/2010/07/feng-shui-of-singapore-part-1.html