The Vicom inspection centre in Sing Ming - I was there today - transported to the 80's when I first moved here.
Parts of the Seletar airport - rapidly disappearing - specifically the old RSFC building. Have you ever looked at the 'honor board' in there? True history.
Portsdown Road area - the old B and W's - disppearing with every expansion of the Biopolis.
I really miss the old Singapore and I totally get why the locals are pissed off with the MIW for changing it too quickly and too much,