London Bridge

London Bridge is a natural limestone sea arch located on the ocean coast at Portsea at the tip of the Mornington Peninsula in Victoria, within Mornington Peninsula National Park. Formed by erosion, it originally had two arches, with the inner arch collapsing in 1990 leaving a single bridge-like formation. It is notable for its dramatic coastal setting, rugged cliffs and clear ocean views, and is accessed via a short walking track to a fenced lookout.

Visitors can expect a dramatic coastal landscape with rugged limestone cliffs and a natural sea arch extending into Bass Strait. The site is viewed from a fenced lookout platform reached via a short walking track from a car park off Point Nepean Road. There is no beach access to the arch itself. The surroundings are open coastal scrub and ocean, with views of the coastline, rock formations and surf. The experience is primarily sightseeing and photography from the lookout.

London Bridge is a natural limestone formation created by long-term coastal erosion. It originally formed a double arch connected to the mainland, resembling a bridge. On 15 January 1990 the inner arch closest to the mainland collapsed, leaving a single offshore arch. The site lies within the Mornington Peninsula National Park and illustrates the dynamic coastal geology of the region.

The area is part of Bunurong / Boon Wurrung Country. The coastal landscape holds significance for Traditional Owners and is valued for its natural heritage within Mornington Peninsula National Park.