Join三十一 upcoming events being held in Katoomba. Katoomba is a charming city nestled in the Blue Mountains of New South Wales, Australia, known for its stunning natural beauty, including the famed Three Sisters rock formation, expansive eucalyptus forests, and picturesque waterfalls, as well as a vibrant arts scene, eclectic shopping, and a rich history that includes Aboriginal heritage and colonial architecture, making it an ideal destination for nature lovers and culture enthusiasts alike.