The Northern Ramparts
Location:
Alderney, Channel Islands
Client:
Private
Structural Engineer:
BML
Surveyor:
Marquis Surveys Limited
Main Contractor:
Mark Maurice
Originally constructed as part of a mid-19th-century Victorian coastal defence system, Fort Corblets once housed 13 guns and a garrison of 59 soldiers, standing guard against the threat of French invasion. The Northern Ramparts formed the fort’s largest and most northerly bastion, commanding expansive views across the English Channel.
Acquired by the current owners in 2006, the Northern Ramparts were carefully reimagined as a contemporary dwelling between 2009 and 2022. The resulting circular residence is embedded within the historic fabric of the fort, offering a sensitive yet confident architectural response that balances heritage, innovation and exceptional panoramic views.
The design draws directly from the fort’s original defensive geometry. Its circular form both honours the historic structure and presents a rigorous architectural challenge, resolved through the creation of rational, light-filled living spaces within a highly constrained footprint. The project explores the dialogue between robust military architecture and modern domestic life.
The exterior expression celebrates craftsmanship and materiality. Industrial ribbon glazing is set beneath locally sourced Alderney granite, showcasing the precision and skill of the construction team. The 20-metre-diameter circular roof is supported by an innovative steel ‘skeleton’ engineered by Paul Armstrong. Bespoke stainless-steel hangers suspend the granite masonry above the glazing, allowing the structure to appear both weighty and refined while responding beautifully to the shifting island light.
Continuous panoramic glazing encircles the building, framing views from the lighthouse to the east through to the beach in the west. Generous expanses of glass flood the interior with natural light while maintaining a strong visual connection to sea, sky and landscape. The architecture invites constant engagement with the elements, from dramatic coastal storms to calm, clear horizons.
Internally, the Northern Ramparts combines contemporary luxury with careful spatial planning. The southern half of the plan is arranged as an open-plan living space, maximising daylight and views, while bedrooms are discreetly located within the northern arc. A central oculus rooflight introduces daylight into a more intimate secondary living area at the heart of the plan. All bespoke joinery, including the kitchen, was crafted by master joiner Dominic Ash. The circular plan encourages fluid movement throughout the house, creating a sequence of interconnected spaces with distinct atmospheres and spatial qualities.
Sustainability was integral to the design approach. The building employs a ‘fabric-first’ strategy, with a substantial concrete base acting as a thermal mass to stabilise internal temperatures. Energy-efficient lighting, underfloor heating and rainwater harvesting further enhance performance, ensuring the Northern Ramparts is both environmentally responsive and comfortable year-round.
