The Sydney Opera House celebrates its 50th anniversary

View the amazing 'sails' of the building from Sydney Harbour while cruising on a ferry to Manly.

For many, travel appears to be ticking off lists of iconic landmarks to see, and vibrant activities in which to participate.

There are numerous lists detailing famous built structures such as the Eiffel Tower (Paris, France), the Great Pyramids (Giza, Egypt), the Leaning Tower of Pisa (Italy), La Sagrada Familia Basilica (Barcelona, Spain), the Taj Mahal (Agra, India), Big Ben (London, England), and Hagia Sophia (Istanbul, Turkiye).