Source: UNESCO World Heritage
Three Sisters of Blue Mountains with the Scenic Skyway. The Blue Mountains is a UNESCO World Heritage site. Thanks to SM who went there on a day tour for this nice card.
Postcard 2Multi-view of Greater Blue Mountains Area. Thanks to SP for mailing from Blue Mountains, Australia.
Postcard 3Three Sisters of Blue Mountains. Thanks to Denny of Australia. Received in March 2019.