The reserve was originally a swampy area that was reclaimed during the mid-19th century to facilitate port operations.
The site contains a memorial to the crew of the HMAS Castlemaine, a Bathurst-class corvette launched during World War II.
The Moreton Bay Fig trees in the reserve are protected, with several specimens estimated to be over 100 years old.
The park acts as a focal point for Williamstown's maritime heritage, located directly adjacent to the site of the former colonial boat harbor.
Commonwealth Reserve is a historic waterfront park situated on the Williamstown foreshore, serving as a primary link between the historic port area and the Hobsons Bay coastline. The park features mature Moreton Bay fig trees and a formal cenotaph memorializing local soldiers. It serves as the primary gateway to the Williamstown harbor, offering direct views of the Melbourne city skyline across the bay. The site hosts the Williamstown Craft Market on specific monthly Sundays. A series of paved paths and green lawns facilitate pedestrian movement through the nautical district. The area maintains historical markers detailing the maritime significance of the region dating back to the 19th century.
The edge of the pier looking back toward the park with the Moreton Bay Fig trees framing the city skyline in the background.
Combine your visit with a walk along the Gem Pier, which extends directly from the reserve into the water.
Check the local market schedule in advance if you intend to visit on a Sunday, as parts of the park may be occupied by stalls.
The area is highly exposed to sea breezes; bring an extra layer even on warm days.
Avoid walking on the grass immediately after heavy rainfall, as the low-lying sections of the reserve can become waterlogged.
The park is public open space with no gates, but the Williamstown Craft Market operates on select Sundays.
