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.