Sydney, capital of New South Wales and one of Australia's largest cities, is best known for its harbourfront Sydney Opera House, with a distinctive sail-like design. Massive Darling Harbour and the smaller Circular Quay port are hubs of waterside life, with the arched Harbour Bridge and esteemed Royal Botanic Garden nearby. The Blue Mountains is a rugged region west of Sydney in Australia’s New South Wales. Known for dramatic scenery, it encompasses steep cliffs, eucalyptus forests, waterfalls and villages dotted with guesthouses, galleries and gardens. Katoomba, a major town in the area, borders Blue Mountains National Park and its bushwalking trails. Echo Point affords views of the storied Three Sisters sandstone rock formation.