Manly Retaining Wall, Heritage levee structure in Manly, Australia.

Manly Retaining Wall is a heritage levee structure in Manly, Queensland that runs approximately 200 meters along Falcon Street, constructed from irregularly shaped stones from Lytton quarry set in concrete foundations. The wall reaches about 7 meters at its highest point and features concrete steps that allow pedestrians to access different street levels within the neighborhood.

Engineer Eneas Fraser Gilchrist designed and built this structure in 1933 to manage soil stability in the clay-rich area. The project emerged during the Great Depression and provided essential employment to locals through the Queensland Relief Scheme.

The cement pointing between the stones was shaped into kangaroos, emus, goannas, boomerangs and human heads by workers on the relief scheme, one head said to resemble the district engineer in charge. The wall appears in the Brisbane City Council heritage walk booklet as "the Great Wall of Manly".

Access to the wall is straightforward via the concrete steps integrated into the surrounding sidewalk and street layout. The slope can be steep in places, particularly when wet, and morning or early afternoon light works best for viewing the carved details.

The structure is sometimes called The Great Wall of Manly, a playful reference to the Chinese monument that locals use when describing this engineering achievement. This nickname highlights how a practical infrastructure project became a recognized local landmark over time.