Boldt Castle, Heart Island
Boldt Castle is landmark tourist attraction on Heart Island, so named because of its heart-like shape, in the Thousand Islands region of New York State, USA.
Construction began in 1900, as part of the millionaire George Boldt's plan to give a six-storey stone castle to his wife on Valentine’s Day 1905.
Among the architectural features of the island are; the Yacht House, a huge playhouse, the Power House, and a 120-room ‘fairytale’ castle which was modelled on Rhineland Castle.
However, construction came to an abrupt halt in 1904 when Boldt’s wife, Louise, died. Unable to face returning to the island, Boldt decided to leave the structures as a monument to his love.
The buildings were left in their unfinished state for 73 years, gradually falling victim to harsh weather and vandalism, until the Thousand Islands Bridge Authority purchased the island in 1977 for $1. They spent around $15 million restoring the masonry structures to the condition they were in when the original construction was halted. They also completed the stained glass dome, marble floor and grand staircase woodwork.
Since its redevelopment, the island has become a popular tourist attraction, and has a continuing romantic appeal for the many couples who choose it as a wedding destination.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Change of use legislation breaths new life into buildings
A run down on Class MA of the General Permitted Development Order.
Solar generation in the historic environment
Success requires understanding each site in detail.
Level 6 Design, Construction and Management BSc
CIOB launches first-ever degree programme to develop the next generation of construction leaders.
Open for business as of April, with its 2026 prospectus and new pipeline of housing schemes.
The operational value of workforce health
Keeping projects moving. Incorporating unplanned absence and the importance of health, in operations.
A carbon case for indigenous slate
UK slate can offer clear embodied carbon advantages.
Costs and insolvencies mount for SMEs, despite growth
Construction sector under insolvency and wage bill pressure in part linked to National Insurance, says report.
The place for vitrified clay pipes in modern infrastructure
Why vitrified clay pipes are reclaiming their role in built projects.
Research by construction PR consultancy LMC published.
Roles and responsibilities of domestic clients
ACA Safety in Construction guide for domestic clients.
Fire door compliance in UK commercial buildings
Architect and manufacturer gives their low down.
The new towns and strategic environmental assessments
12 locations of the New Towns Taskforce reduced to 7 within the new towns draft programme and open consultation.
Buildings that changed the future of architecture. Book review.





















