Martello Tower Y, Suffolk, England

Cannons used to stand on top of the 30-foot high Martello Tower Y , a fortress built in 1808 to defend the east coast of England against a possible invasion by Napoleon’s French forces. Two years ago industrial designer Duncan Jackson of Billings Jackson Design and Piercy Conner Architects restored and revived the tower as a monumental base for a three-bedroom, roof-level contemporary residence with views of surrounding farms and shoreline. Entry is via the first floor, once an ammunition store.

Unusual Buildings