While much of The Rocks’ history is visible in its architecture, some of its most fascinating stories were found deep underground. Between Gloucester Street and Cumberland Street, you will find The Big Dig, one of the largest urban archaeological sites in Australia. In 1994, excavations here uncovered over one million artifacts and the foundations of 30 homes dating back to the late 1700s. Unlike the grand mansions of colonial governors, these finds revealed the everyday lives of convicts and free settlers—their medicine bottles, clay pipes, and cooking pots. Today, the Sydney Harbour Youth Hostel literally stands on stilts above these ruins, allowing you to walk on glass floors above the remains of eighteen-twenty-era cottages. It is a striking reminder that Sydney is a city built literally knee-deep in its own ruins, with layers of history hidden just beneath the pavement.