The Wiebbe Hayes Stone Fort on West Wallabi Island (also known as Wiebbe Hayes Island) is the oldest surviving European building in Australia and was built in 1629 by survivors of the Batavia shipwreck and massacre.

Following the Batavia shipwreck in 1629, a group of the marooned soldiers under the command of Wiebbe Hayes were put ashore on West Wallabi Island to search for water.

However, the soldiers discovered that they were able to wade to East Wallabi Island, where there was a fresh water spring.

The remnants of improvised defensive walls and stone shelters built by Wiebbe Hayes and his men on West Wallabi Island are Australia's oldest known European structures,[2][3]: 37 [4] more than a century and a half before expeditions to the Australian continent by James Cook and Arthur Phillip.

[1] The remnants of "the fort ... [are] nothing more than a tiny, sandstone-coloured rectangle in the scrub about 100 metres [110 yd] from the sea.