Subterranean pr0n

G-Cans flood control system, Showa, Japan: crooked brains
Plus, Range Rover Tokyo ad: youtube

Drains of Canada: bldg blog

Hong Kong: Tunnel vision

Fascinating exploration around Hong Kong's Central Business District and Government offices:

Hong Kong’s financial and government leaders have traditionally been based in the Central district, so it’s no surprise that the area was given several air raid tunnel shelters in the lead up to the second world war. Can you still see any sign of them? Let’s take a look.

Air Raid Precaution (ARP) tunnels in Central: batgung