The Australian Museum, located in Sydney, New South Wales, Australia, was founded in 1827, making it the oldest museum in the country. The museum’s current building, designed by Mortimer Lewis, was completed in 1849 and features a neoclassical design. The museum’s collection includes over 21 million objects, ranging from fossils and minerals to cultural artifacts from Indigenous Australian communities. Notable exhibits include the Dinosaur Gallery and the Westpac Long Gallery, showcasing the museum’s most significant treasures.