If you look at the map above which shows the distribution of all the tall HDB blocks with height of 40-storeys and above across Singapore, you will notice that they tend to gravitate towards the southern and south-western parts of the island. In fact, except for Toa Payoh, Bishan and Kallang/Whampoa towns, most of the them are aligned linearly in a straight line from Central Area all the way to Jurong...