Sea forts are fortified stone structures located in the ocean. They can be found in the shallows near the coast, or set further off the mainland in deeper water.

Two sea forts that were built to deter a French invasion in the 19th Century have each been sold at auction for more than £1m. The pair, both previously converted into luxury hotels, are among ...

There are not one, but two, unique island sea forts going up for auction on Savills ... with old-world charm incorporated ...

It is one-of-the kind as ravaged sea waves and a corrosive environment has still not been able to damage much of the fort, especially the exterior walls, which bear the brunt of the angry sea ...