Source: UNESCO World Heritage
Nice night view of the Sydney Opera House. Thanks to Lynne of Sydney for sending this postcard with nice flower stamps.
Postcard 2A view of Sydney Harbour with the Sydney Opera House - commemorating Sydney 2000 Summer Olympic Games.
Postcard 3Night view with moon. I bought this Sydney Opera postcard, mint, from Singapore in August, 2015.
Postcard 4Opera House. Thanks to Laurent of Sydney, Australia.