Just post a thread in GD.
If you put Hong Kong in the title then you'll summon Raymond Lin to dish out advice and use it as an excuse to post some rather nice pictures.
If you're interested in North Korea or indeed just about any other dodgy country out there then chances are Mickey Flinn has been there, cycled across it, organises tours to it and has an entire photo album too.
If you post about Las Vegas then you'll summon Rotty and for bonus points - if you mention the words "Grand Canyon" and "Helicopter" in the same post then you'll trigger TW Fox!
If you mention an exclusive resort, private island etc.. then Crinkleshoes and Housey can probably help.
As for any Eastern European capital, half of GD will have been there on a stag do and can tell you exactly which strip clubs they got completely ripped off in...