Roter Sand is a lighthouse in the North Sea, in the Weser estuary. It entered service in 1885. The light was deactivated in 1986 but the tower still serves as a day beacon. Roter Sand lighthouse was the first building ever to be erected directly on the sea floor.
North Reef Light is an active lighthouse located on North Reef, a 5.6 square kilometres planar reef, about 120 kilometres (75 mi) northeast of Gladstone, Queensland, Australia. The lighthouse was constructed on a migratory patch of sand inside a fringing coral reef, which over the years disappeared and reappeared, as sand was washed away and accumulated,...
The Pilsum Lighthouse (German: Pilsumer Leuchtturm) was built in 1889 in order to provide a beacon for theEmshörn channel on Germany's North Sea coast. It is located on a dyke near the village of Pilsum in the municipality of Krummhörn.
Cape Otway Lighthouse is a lighthouse on Cape Otway in southern Victoria, Australia. It is Australia's oldest working lighthouse. During winter to spring, the lighthouse is a vantage point for land-based whale watching as migratingwhales swim very close to shores.