Sydney has one of the best metro transportation systems that I have had the opportunity to experience. You can take the metro train directly from the international airport in Sydney to numerous destinations throughout the city including a major transportation hub of Central Station. We took the metro to Weygard Station which was near our hotel in downtown Sydney and it is very convenient. You can purchase an OPAL Card from a convenience store and use it on metro trains, light rail system and on buses. You can also purchase an OPAL Card at the various stations via a kiosk but it costs more that way and you buy a one way ticket instead of travelling for several days and you save 30 % on the purchase price. The only thing is that you cannot reload the OPAL Card, just use it until the money you originally used to purchase the card has expired. The signage is easy to follow but get a map at the station. Great way to get around town and outlying areas. read more