Hong Kong (series) - Rod Taylor (1960) - Nathan Road, Mongkok

The screen shot below is taken from one of the better quality episodes (episode 9 - The Turncoat) but in fact was used as an establishing shot for multiple episodes (I counted at least ten episodes but it could be more seeing as episode 14 is still missing). It is a shot of the rather colourful part of Nathan Road in Mongkok where the King Wah restaurant/Paramount Nightclub used to stand (right side of image). For a nice colourful comparison, Gwulo.com has a good image here. The current building there is the King Wah Centre that keeps the name of the previous building.