A surprising amount of Hong Kong's military buildings still exist. Sometimes because they are in out-of-the-way places that noone has thought about redeveloping yet. Sometimes because they are still under the control of the military authorities, and so are out of bound for redevelopment. And a precious few are considered listed buildings, and so are actively protected.

During its time as a British colony, Hong Kong's role as a military base went through several different phases.

And why did Harrison Forman give her special treatment?

Readers often leave questions, most of which get answered quickly. But there are always a few that are more difficult to answer.

Here are some of the most stubborn - please can you help answer any of them?

Shall we build one?

We've made a good start: batgung.com already has 900+ places, 1,800+ photos, and several thousand notes and comments. But recently I've been thinking about how we can keep it growing and improving, and would like to hear your ideas and feedback.

Why bother?

Let's clear up one obvious question first – we already have the internet as a catalogue of Hong Kong's memories, and Google to search it. Do we need anything more?