I am guessing that TS wanted to do a day time landscape shoot instead of the sunrise or sunset.
imho, the possible time for best light is just after the sun rise from the horizon till about 10am and 4pm till just before sunset. Assuming the ambient light is good, you can find soft and warm light casting nice shadows on the building.
the link by spree86 show quite a lot of the possible places.
Well... it is really up to one's imagination on what to shoot at whatever time of the day. You can even shoot landscape in the afternoon if you want... and yes, lighting will be harsh, but photography is about lighting too... if you cannot find the 'ideal' lighting, you would have to make do with whatever you have.
One place that I can think of is fort canning hill... lots of tree, an old fortress, old doors, etc... all these structures can let your imagination wild and you can try shooting there.