Line, Princess Cruises and Royal Caribbean, all offer cruises to Australia across the Pacific.
Alternatively, you may sail to Australia in your own yacht, but beware of customs regulations. See Australian Customs for details
By overland transport
There was a time when a couple of tour operators offered overland trips from London to Sydney, with only a short hop by air from South East Asia to North Western Australia while the bus went by barge. Currently, the only such tour operator is Madventure which runs 4 different routes: 26 weeks through Iran, Pakistan, & India; 26 weeks through the Caucasus & Central Asia; 64 weeks around Africa, the Middle East, & South Asia; and 64 weeks through Africa, the Middle East, the Caucasus, & Central Asia.
For those determined to travel overland as much as possible from Europe, you can travel independently to Singapore from Europe by train and/or bus on scheduled services, and fly from there to Perth (3500 flight kilometres). For the truly determined overland traveller, you can get a ferry from Singapore to Indonesia and make your way across to Bali, where you can fly to Darwin (2000 flight kilometres). For the intrepid, ferries to West Timor, a bus to Dili and a flight to Darwin will mean only 700 kilometres in the air.
Get around
Australia is huge but sparsely populated, and you can sometimes travel many hours before finding the next trace of civilisation, especially once you leave the south-eastern coastal fringe.
Almost all modern Australian maps, including street directories, use the Geocentric Datum of Australia (GDA) as their grid reference, which is for all purposes identical to the WGS84 used by the GPS. You can locate most things on an Australian map or street directory if you just have the "GPS coordinates".
Quarantine
There are restrictions on carrying fruit and vegetables (including honey) between states and even between
