There is a "museum" of Hong Kong's infrastructure in Central, do you know???
http://www.info.gov.hk/infrastructuregallery/
All of the above pictures come from the website of the infrastructure
"museum"
http://www.info.gov.hk/infrastructuregallery/ 
Gallery Address : The Hong Kong Planning And Infrastructure Exhibition Gallery, G/F., 3 Edinburgh Place, Central, Hong Kong
Opening Hours : 10:00 - 18:00 daily
Gallery closed on Tuesdays (except Public Holidays) and the first two days of the Chinese New Year
Enquiries :
Tel: 3101 6516
Fax: 3104 0129
E-mail Address:
piegal@pland.gov.hk
Ticket may be required for admission when the management considers such arrangement necessary. Visitors will then only enter and stay in the gallery during the period specified on the tickets.
Free Admission