Train travel offers one of the safest and most relaxing ways to explore Australia and beyond for seniors travel.
CountryLink offers hoders of Centrelink pensioner card or government issued seniors card a 50% concession on the full adult fare. In addition to providing transport, CountryLink also offers great value holiday packages.
Great Southern Rail (GSR) offers seniors a variety of travel discounts on iconic train journeys such as The Ghan, Indian Pacific and The Overland.
Rail Europe Australia offers fantastic deals on senior rail passes for UK/Europe.
About.com has a great article about discounts available to seniors for train travel in Europe looking at each country (they all differ).