Amsterdam, Netherlands
Athens, Greece
Atlanta, USA
Bahrain, Bahrain
Baltimore, USA
Bangkok, Thailand
Berlin, Germany
Boston, USA
Buenos Aires, Argentina
Cairo, Egypt
Chicago, USA
Cleveland, USA
Copenhagen, Denmark
Denver, USA
Detroit, USA
Dubai, United Arab Emirates
Ft. Lauderdale, USA
Gatlinburg, USA
Guam, Guam
Hollywood, USA
Hollywood FL, USA
Hong Kong The Peak, China
Hong Kong Kowloon, China
Honolulu, USA
Indianapolis, USA
Key West, USA
La Jolla, USA
Lake Tahoe, USA
Las Vegas, USA
Lisbon, Portugal
London, England
Los Angeles, USA
Madrid, Spain
Makati, Philippines
Palma de Mallorca, Spain
Malta, Malta
Malta Valetta Bar, Malta
Malta Airport, Malta
Melbourne, Australia
Memphis, USA
Miami, USA
Minneapolis, USA
Mumbai, India
Munich, Germany
Myrtle Beach, USA
Narita, Japan
Nashville, USA
New Delhi, India
New York (old), USA
New York (new), USA
Niagara Falls, USA
Niagara Falls, Canada
Orlando, USA
Oslo, Norway
Ottawa, Canada
Paris, France
Philadelphia, USA
Phoenix, USA
Pittsburgh, USA
Pune, India
Rome, Italy
Sacramento, USA
San Diego, USA
San Francisco, USA
Singapore, Singapore
Stockholm, Sweden
Sydney, Australia
Tijuana, Mexico
Tokyo Roppongi, Japan
Uyeno Eki Tokyo, Japan
Toronto, Canada
Toronto Skydome, Canada
Washington DC, USA

$ wc -l HRC.txt ; awk -F , ' { print $2 } ' < HRC.txt |sort|uniq|wc -l
73 HRC.txt
27
$