Travel Delights - City Nicknames - Cities In Metaphors

The Big Apple - New York city (as opposed to New York State)
The Big Smoke - Auckland, New Zealand; Belfast, Brisbane, Dublin, Johannesburg, London, Manchester, Melbourne, Mexico City, New York City, Sydney, Toronto, Vancouver,
City of David - Jerusalem
City of Gold - Jerusalem
City of Peace - Jerusalem
Europe's Drawing Room - St Mark's Square (so called by Napoleon);
Granite City - Aberdeen
Jerusalem of the North - Vilnius (so called by Napoleon)
Lion City - Singapore (Malay from Sanskrit)
Little Italy
Little Paris
Little Venice
The Paris of the East
The Paris of the West
The Pearl of the Orient - Hong Kong; The Philippines
Porkopolis - Cincinnati; Chicago
The Venice of the East - Bangkok, Thailand
The Venice of the North
Windy City - Chicago

MORE INFORMATION
From Wikipedia
From tourist board websites and brochures - if you are in the travel business visit The World Travel Market in London in November.