The Greater Blue Mountains is a UNESCO World Heritage site located in New South Wales, Australia. It encompasses a vast area of rugged mountains, deep valleys, and unique ecosystems, covering over one million hectares. The region is known for its stunning landscapes, including the iconic Three Sisters rock formation and numerous waterfalls. This area is home to diverse flora and fauna, including many species that are endemic to Australia. The Blue Mountains National Park offers various recreational activities such as hiking, rock climbing, and birdwatching, making it a popular destination for nature lovers and outdoor enthusiasts.