Searles Castle
Also known as: Kellogg Terrace; Barrington House; Hopkins-Searles Mansion
Why it's listed
Searles Castle is a forty-plus room mansion in the center of Great Barrington, Massachusetts, set behind high stone walls on about 64 acres between Main Street and the Housatonic River. Designed by McKim, Mead and White in the French Chateau style and finished in 1888, it is built of rock-faced blue dolomite from a quarry on East Mountain, with seven towers, many gables and a steep slate roof. Inside are oak woodwork, a pink marble atrium, a Louis XIV drawing room and a large music room that once held an organ. The estate also includes a carriage house and a lagoon with a fountain. Construction began for Mary Hopkins, widow of Central Pacific Railroad founder Mark Hopkins. Interior decorator Edward Searles supervised the work and later married her. Listing recognizes the building as a fine work of a leading architectural firm and as a site linked to prominent late nineteenth-century business and society figures.
Significance in brief: The nomination argues it is an accomplished work of McKim, Mead and White in the Chateauesque style and one of the finest estates in the Berkshires (Criterion C). It is also tied to railroad magnate Mark Hopkins, his wife Mary, and decorator Edward Searles (Criterion B).
Machine-generated summary. This summary was generated by a language model from the official nomination document and has not been reviewed line by line by an editor. It may contain errors. Check the source document before relying on any detail. Source: nomination document (PDF) · National Archives catalog entry. NRHP reference 82004953, listed April 15, 1982. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence high).
Key facts
| Address | Main St., Great Barrington |
|---|---|
| County | Berkshire County |
| Listed | April 15, 1982 |
| Reference number | 82004953 |
| Resource type | Building |
| Period of significance | 1883-1888 |
| Architect / builder | Architect: McKim, Mead, and White (Stanford White); Builder: Norcross Bros., Worcester, MA |
| Architectural style | French Chateau / Chateauesque |
| Criteria |
|
| Areas of significance | Landscape Architecture, Art, Architecture |
| Level of significance | National |
| Status (as stated in the nomination) | Listed as occupied, in excellent condition, unaltered and on its original site; present uses include museum, commercial and educational. A golf course covers most of the grounds below the castle. |
| Acreage | 64 |
| Coordinates | 42.18993, -73.36119 (NPS GIS) |
What listing means for this property
National Register listing is honorary: it recognises significance and does not restrict what a private owner may do without federal money or permits. It unlocks the 20% federal rehabilitation tax credit for income-producing buildings, state credits in many states, and Section 106 review when federal agencies are involved. See what listing means in practice.
General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.
Sources and further reading
- National Park Service, National Register of Historic Places database (snapshot May 2026), reference 82004953.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q7441763
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.