Boldt Castle
| Boldt Castle | |
|---|---|
| General information | |
| Architectural style | Châteauesque | 
| Location | Heart Island | 
| Town or city | Alexandria Bay, New York | 
| Country | United States | 
| Coordinates | 44°20′40″N 75°55′21″W / 44.344525°N 75.922575°W | 
| Named for | George Boldt | 
| Construction started | 1900 | 
| Construction stopped | 1904 | 
| Renovation cost | $15 million (1977) | 
| Owner | Thousand Islands Bridge Authority | 
| Technical details | |
| Floor count | 6 | 
| Design and construction | |
| Architecture firm | G. W. & W. D. Hewitt | 
| Website | |
| www | |
Boldt Castle is a major landmark and tourist attraction in the Thousand Islands region of the U.S. state of New York. Open to guests seasonally between mid-May and mid-October, it is located on Heart Island in the Saint Lawrence River. Heart Island is part of the Town of Alexandria, in Jefferson County. Originally a private mansion built for German-American millionaire George Boldt, it is now maintained by the Thousand Islands Bridge Authority as a tourist attraction.