Complex sentence: Crown Casino opened in 1994 at the World Trade Centre on the north bank of the Yarra River, moving to the new complex at Southbank in 1997 (where a railway once was that led to St Kilda).
Split into simpler sentences: Crown Casino opened in 1994 at the World Trade Centre on the north bank of the Yarra River. The Casino complex opened in it's proper planned location at Southbank in 1997 (where a railway once was that led to St Kilda).