Sydney is built around Port Jackson, which includes Sydney Harbour, leading to the city's nickname, "the Harbour City".
Rio de Janeiro is famous for its natural settings, its Carnival celebrations, samba and other music, and hotel-lined tourist beaches, such as Copacabana and Ipanema.
While Madrid possesses a modern infrastructure, it has preserved the look and feel of many of its historic neighborhoods and streets.
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Founded by Tsar Peter I of Russia on 27 May, 1703, Saint Petersburg was the capital of the Russian Empire for more than two hundred years.
It's in the centre of Sri Lanka, and is a beautiful and green city.